Fidelia

Fidelia — Help

High-fidelity playback for the music you own — on the Mac, and on iPhone and iPad. Bit-perfect output, professional DSP, Audio Unit hosting, and headphone virtualization.

Contents

Getting Started

Getting Music into Fidelia

Four routes, and you can use any combination of them.

From your Mac (Bridge)

The fastest way to start. With Fidelia running on your Mac and both devices on the same network, open Settings › Fidelia Bridge and pick the Mac. Your servers, stations and settings come across, and your Mac's library becomes browsable and playable here. See Bridge for the full picture.

Your own files — four ways in

However the music arrives, Fidelia keeps its own copy on this device. That copy cannot be cleared to save space the way a cloud folder can, which is what lets CarPlay play it on a drive with no signal.

From a cloud service, inside Fidelia

Your music is in OneDrive, Google Drive, Dropbox or iCloud Drive, and you would rather not involve a computer. Tap + at the top of the library, tap Browse, choose the service, and pick the folder your music is in — a parent folder with all your albums under it, not one album at a time. Fidelia copies it across with the album folders and cover art intact.

From a Windows PC, over the cable

The fastest route for a large collection: no upload, no download, no USB stick. Install Apple Devices from the Microsoft Store, connect this device with a cable, open Files in the sidebar and find Fidelia in the list. Drag your albums in. Open Fidelia and they are in your library. (On a Mac, the same folder is in the Finder sidebar under this device.)

From the Files app, a track at a time

Touch and hold the track, choose Open With, then Fidelia.

Looking in Share and not finding Fidelia? Use Open With instead. iOS keeps the apps that can open a file in Open With, and saves Share for sending it to a person or posting it somewhere.

The Fidelia folder itself

In Files, tap Browse, then the location named for this device, then Fidelia. That folder is your library: copy albums into it from iCloud Drive, a connected USB drive or another app’s folder, and everything you put there is picked up the next time you open Fidelia.

Apple Music

Turn on Settings › Sync Apple Music Library to fold your owned Apple Music tracks into the library. Only tracks you own and have downloaded can play — see Apple Music Library.

A music server on your network

Fidelia browses UPnP/DLNA servers and Lyrion (LMS) libraries directly — see Network Servers & Streamers.

Removing music

Swipe a song, or long-press a song or an album cover, for Delete from Library. Select at the top of the Songs and Playlists tabs removes several at once. Your audio files are never touched — the song leaves the library and the file stays exactly where it is, including Fidelia’s own copy in its folder, which you can remove yourself in Files. This applies to music you added to Fidelia; Apple Music tracks are managed in the Music app, and a server’s or a synced Mac’s catalog is managed at its source.

Trial & Purchase

Your Library

Now Playing

Audio Output

Open Settings from the Now Playing card, or the gear in the library toolbar.

Bit-Perfect

Bit-Perfect matches the output rate to the file and takes the DSP chain out of the path — Crossfeed, dither, ReplayGain and any Audio Units you have loaded. It is the honest setting for critical listening, and it is genuinely exclusive: while it is on, an effect switched on in the rack is not in the signal path, and the fidelity readout says so rather than claiming an enhancement that is not happening.

What it does not promise. On iOS the audio path belongs to the system, and no app is given the guarantee a Mac can make about the exact samples reaching a DAC. What Fidelia can do — and does — is rate-match and stay out of the way, which is bit-transparent rather than certified bit-perfect. With a USB DAC that reports its rate honestly the result is the same; the difference is that iOS will not let any app prove it. Worth verifying with your own DAC rather than taking on faith.

Sample Rate Conversion

When the output cannot run at the file's own rate, Fidelia resamples rather than letting the system do it. Quality offers Standard, High Fidelity (the default) and Mastering — the same resampler the Mac uses, which exposes five tiers to its five-tier picker. Advanced holds the filter's own settings for anyone who wants them.

Follow file sample rate is what avoids conversion in the first place, and Bit-Perfect forces it on. Nothing is resampled when the output is already running at the file's rate.

Dither

Dither on bit-depth reduction is on by default. Shaped noise keeps low-level detail intact when the output stage reduces bit depth — without it, truncation turns quiet passages into harmonic distortion. It is the same psychoacoustic engine as Fidelia for Mac, and it is bypassed entirely in Bit-Perfect.

Internet Radio

Audio Units (AUv3)

Fidelia hosts third-party Audio Unit v3 effects — the same class of plug-in used by GarageBand and Logic — alongside the effects built into iOS.

Loading an effect

The plug-in's own interface

Things worth knowing

DSD Playback

Fidelia plays DSD files (.dsf and .dff) — the 1-bit stream is decoded to high-resolution PCM in real time, so DSD plays gaplessly on any output and rides the same signal path as the rest of your library. The readout names the source for what it is: DSD64, DSD128 and so on, not the PCM rate it was decoded to.

There is no DoP on iOS. Sending an untouched DSD bitstream to a DAC inside a PCM carrier is something iOS does not permit any app to do — this is a platform limit, not a Fidelia one, and no iOS player can offer it. Real-time decode to PCM is the path, and it is the same decoder the Mac uses. If you need a native-DSD signal to your DAC, that is a job for Fidelia on the Mac.

Network Servers & Streamers

Both are part of the Network module.

Playing from a server

Playing to a streamer

If nothing is found

Supported Formats

A format is listed here only when there is a decoder behind it. A row you cannot play is worse than a row that is not there.

Apple Music Library

CarPlay

Music that plays anywhere, signal or not

The car plays what is on this device. Anything you added through Getting Music into Fidelia — over the cable from a computer, by picking a folder in + › Browse, or with Open With › Fidelia — is copied here and stays, so it is always in the car.

Music that lives somewhere else needs bringing across first: use Keep Offline for a track, album or playlist on a music server or a synced Mac. A playlist’s row in the car counts this for you — 12 of 12 available is a playlist that will play the whole way.

Troubleshooting

A third-party effect is not in the picker

An effect is loaded but nothing changes

Bridge cannot find my Mac

Apple Music tracks are missing

Playback stops when the screen locks

Getting Started

Library

The Library stores all your imported audio with metadata, artwork, and playlists. Files are referenced by location — Fidelia does not copy files into its library folder.

Importing Music

To audition tracks without adding them to your library — for example, listening to client mixes, evaluating new files before keeping them, or playing files from an external drive — see Preview Playlist.

Managing Your Library

The track table

Playlists play in the order you see

A playlist plays in the order you arranged it. Sorting a playlist's column is a view — it changes what you are looking at, not the order it will play, and the header says so. If you would rather a column sort also set the play order, turn on Sorting a playlist changes the play order in Settings → General. Playlists imported from Music.app arrive in the order you arranged them there.

Relocating Missing Tracks

If you move files to a new location, tracks will appear as offline (dimmed with a warning icon). Use File → Relocate Missing Tracks to point Fidelia at the new folder. It matches files by name and automatically updates all references.

Album View

The Library has two layouts, toggled by the List / Wall control in the window titlebar (next to Search). The song list is the default; the Wall is a graphical grid of your album covers. Whatever narrows the song list — a playlist selection, a search — narrows the Wall the same way.

Various-artist compilations group as one album — on the Wall and in the Sleeve — rather than scattering by track artist, and a real Album Artist always takes precedence over the compilation flag.

The Wall

The Sleeve

Opening an album lifts its cover into place on a full page, lit by a slow, breathing gradient drawn from the artwork and kept dark so it never glares. The Sleeve gathers the cover, album credits, and the album's tracks in order.

Editing Metadata

Open Get Info on a song with ⌘I or via the right-click menu. The dialog is fully editable for songs imported into Fidelia's library; songs sourced from Music.app are read-only (Music.app is the source of truth there).

Editable fields

Sample rate, bit depth, bitrate, duration, format, and file location are technical properties of the audio data itself and aren't editable from Get Info.

Apply to all songs in this album

At the bottom of the single-song dialog, the Apply to all songs in this album checkbox expands an edit to every song that shares the current Album and Album Artist. Useful for fixing genre or year across a whole album from one track.

Editing many songs at once

Select multiple songs in the library and open Get Info — a multi-song dialog appears with a subset of fields (Artist, Album, Album Artist, Composer, Genre, Year, Comment). Per-song fields like Title and Track number are hidden because their values aren't meaningfully shared across a selection.

What Save does

Clicking Save updates Fidelia's library database immediately, then mirrors the new values into the source file's embedded tags off-main:

For each format that supports it, Fidelia preserves frames and keys it doesn't manage itself — ReplayGain, MusicBrainz IDs, custom user tags from other editors all survive a Save.

Successful saves are silent. If a file write fails (volume offline, file became read-only, format unsupported), a transient toast appears at the top of the Library window confirming the database edit and explaining what didn't reach the file.

Library access for tag writes

For libraries on external volumes or NAS shares, Fidelia may ask once for folder access the first time you save tags into that location — granting the suggested folder covers every file underneath, persists across launches, and won't ask again for that library. Local libraries imported normally don't trigger any prompt.

Multi-song save progress

Album-scope and multi-song commits below 30 songs run silently in the background. Larger commits show a progress toast at the top of the Library window with a counter and Cancel button — you can dismiss the Get Info dialog while the writes finish. Cancel stops scheduling new writes; in-flight writes complete atomically (already-written files stay written).

If a file write fails: it retries automatically

When a tag write can't reach its file (NAS dropped, volume ejected, permission revoked), Fidelia queues the affected song and tries again on the next launch. Once the volume is reachable, the file gets the database's current values silently — no user action needed.

For the rare case where a queued retry can never succeed (a permanently-removed volume), File → Clear Pending Tag Writes empties the queue manually. The menu item is disabled when nothing is pending.

Playlist Folders

The sidebar supports nested folders for organizing large playlist collections. Folders are containers — they hold playlists and other folders, but never songs directly.

Creating folders

Organizing

Deleting

Right-click a folder and choose Delete Folder. Empty folders delete inline. Folders with playlists or sub-folders inside open a confirmation alert that lists what will be removed.

Music.app folders

With Music.app integration enabled, Fidelia mirrors the folder hierarchy from your Music.app library under the Music section of the sidebar. Music-side folders are read-only — they reflect Music.app's organization and update when Music.app changes.

Preview Playlist

The Preview Playlist is an opt-in scratch space for tracks you want to listen to without adding them to your Library. It's cleared automatically each time you launch Fidelia, so it never accumulates state between sessions.

Useful when you're auditioning client mixes, evaluating promo files before keeping them, or playing tracks from an external drive you don't want referenced in your permanent collection. Each new drop replaces the previous Preview session — Fidelia treats each batch as a new audition.

Turning it on

Open Settings → General → Library and enable Preview Playlist. A new Preview entry appears in the sidebar (under Fidelia, alongside Library) marked with a lightning-bolt icon to signal its ephemeral nature. The row is shown only while Preview has tracks in it; an empty Preview is hidden.

Adding tracks

⇧-drag works on Fidelia's own windows. Dropping on the Dock icon, using Open With → Fidelia from the Finder, or double-clicking an associated file always goes to your Library. For preview semantics from those entry points, see Preview-only mode below.

Each Preview drop replaces any tracks already in Preview — drop a list, the list plays from the first track. If a track in the new drop is also currently playing, it restarts from the beginning so the audition session is consistent.

Promoting tracks to your Library

Clearing

Preview clears itself at every cold launch — quit Fidelia and reopen it, and Preview starts empty. To clear during a session, right-click the Preview sidebar entry and choose Clear Preview.

Preview-only mode

If your primary use of Fidelia is auditioning rather than collecting — common for mix engineers, A&R, and reviewers — enable Send all incoming files to Preview by default in Settings → General → Library (visible once Preview Playlist is on).

With this mode on, every entry point — drag-and-drop, Open With → Fidelia, Dock-icon drops, and double-clicks — routes incoming files into Preview instead of your Library. Use File → Import to Library (⌘O) for the rare track you want to keep, or hold ⇧ while dragging onto a Fidelia window to import that specific drop.

Preview is a session-local, machine-local concept. It isn't synced via Music.app, never participates in playback history, and isn't visible to Fidelia Remote. Tracks that exist only in Preview disappear at next launch — back up anything you want to keep by promoting it to your Library first.

Internet Radio

Fidelia plays internet radio alongside the music you own. Stations live in their own Streams section in the sidebar, and every stream runs through the same reference engine as your local files — your output device, HeadSpace, and signal path, untouched.

Adding Stations

Playing a Stream

Station Presets

Presets are stations — nine numbered slots you recall blind, like the push buttons on a car radio. Right-click a station and choose Set as Preset to assign a slot (1–9); each slot holds a single station, so setting a slot takes it from whatever held it before. A preset station carries its slot number as a badge and leads the list in slot order — at the top when you're tuned to All, and at the top of its own band.

Recall any preset instantly with ⌃1–⌃9, from Controls → Presets, or from the transport bank in Fidelia Remote — from anywhere in Fidelia, whatever you're doing.

The Tuner

Honest Fidelity

Streams are graded by their real source quality — the Fidelity Light and signal path read the stream's actual codec and bitrate, and never dress up a lossy feed as more than it is. Where a station broadcasts a lossless stream, you hear it lossless.

HLS, Opus, and Ogg Vorbis stations play natively. Streams are played, not stored — they aren't part of your on-disk library — and you can browse and play them from Fidelia Remote as well.

Playback

Click the track-time readout to change what it shows — including a precise volume level in dB — and Fidelia remembers your choice, the same way it remembers whether the timer counts up or down.

Fidelia can run as a clean file-to-DAC path or as a full DSP playback chain, depending on your Output, Audio Engine, HeadSpace, and Advanced settings. Bit-perfect mode bypasses the DSP chain entirely.

When you press pause with effects loaded (reverbs, delays, convolutions), Fidelia lets the plug-in tails decay naturally for up to a few seconds rather than cutting them off — same behavior a DAW would give you on a transport stop. Resume is still instant.

Now Playing

Now-Playing Panel

As you browse the Library, a now-playing panel stays in the sidebar with the current cover, a scrubber, and transport controls — playback is always to hand without switching back to the player window. Click the cover to jump straight to that album's Sleeve.

Fidelity Light

A small light beside the now-playing track shows at a glance how cleanly it's reaching your ears — a quick read on whether you're hearing the file untouched or with conversion and processing in the path. It's color-graded from a lossless, bit-accurate path through to a lossy source.

Click the light for the full signal path — every stage in order, from the source file through resampling, HeadSpace, Audio Unit effects, and dither to your output device, each one graded. Bit-perfect playback shows a short, clean path (source straight to output), because it bypasses the DSP chain entirely.

Player Views

Audio Output

Fidelia sends audio to your selected output device using its own playback engine. Configure device selection, hardware sample rate, and routing in Settings → Output.

Multichannel

Fidelia plays surround records at their full width — 5.1, 7.1, 7.1.4 and up to 9.1.6, sixteen channels — through any interface with enough outputs.

It reads the channel layout the file declares rather than guessing from the channel count or their order in the file. That distinction matters on real records: a 3.1 mix is not played as quad, and an LFE channel goes to the subwoofer rather than to whichever speaker happens to sit in that position.

A stereo record is unaffected. Fidelia only widens the bus when the file is wider, so nothing about two-channel playback changes because you own a surround rig.

Fold-down

Playing a surround record on a stereo device folds it down properly — the centre channel, and the lead vocal that usually lives there, is mixed in rather than dropped. The same fold-down applies when you send a multichannel track to a network streamer.

Headroom

Settings → Advanced → Headroom gives the chain room at the top. It is useful when speaker trims push a channel up — an under-powered amp on the surrounds, for instance — and the sum would otherwise have nowhere to go. Headroom stays out of the way in Bit-Perfect mode, where nothing may touch a sample.

The Output Dashboard

The Output Dashboard is your rig on one surface: your speakers on the left, drawn where they actually sit in the room, and your interface's outputs on the right. Open it from Settings → Output.

Assigning outputs to speakers

Hearing what is where

Calibrating a Rig

Fidelia calibrates by measurement, not by arithmetic you have to do yourself. Each speaker takes three things:

You supply the measurements; Fidelia does the maths. Two subwoofers in different corners can be calibrated differently from each other, which is the reason to have two.

A rig is remembered per output device

Your positions, distances and trims are a physical fact about a room and an interface, so they are stored against that output device. They survive a relaunch, they stay put when a stereo album follows a 5.1 one, and plugging in a different interface brings back its own rig rather than applying this one to it.

Plug-ins across a wide bus

Audio Unit slots run a bus up to sixteen channels across, so a convolver can take a stereo record and emit a filtered channel per driver. Slots that only speak stereo say so plainly and are bypassed rather than guessed at.

The routing matrix names where its row count comes from — the playing file, or a width you fixed yourself — and links to the control that sets it.

Network Streamers

With the Network upgrade, Fidelia can play to a UPnP/DLNA network streamer — a Denon or HEOS component, HQPlayer on another machine, a Sonore Rendu, or any renderer that accepts standard UPnP AV control. Choose Find network streamers… in the output picker; discovered streamers appear in the Network section.

If your streamer doesn't appear

Still stuck? A one-minute Terminal check

This asks every UPnP device on your network to identify itself, and prints each one's address and description URL. Nothing about Fidelia is involved, so it tells you whether the network path itself is working. Open Terminal (Applications → Utilities), paste the whole line below, and press Return. If macOS asks whether Terminal may find devices on the local network, click Allow. 

/usr/bin/perl -MSocket -MIO::Select -e 'socket(S,PF_INET,SOCK_DGRAM,getprotobyname("udp"));bind(S,sockaddr_in(0,INADDR_ANY));send(S,"M-SEARCH * HTTP/1.1\r\nHOST: 239.255.255.250:1900\r\nMAN: \"ssdp:discover\"\r\nMX: 2\r\nST: ssdp:all\r\n\r\n",0,sockaddr_in(1900,inet_aton("239.255.255.250")));my $sel=IO::Select->new(\*S);while($sel->can_read(3)){recv(S,my $d,2048,0) or next;my($loc)=grep{/^LOCATION:/i}split /\r\n/,$d;next unless $loc;$loc=~s/^LOCATION:\s*//i;print "$loc\n"}' | sort -u

Each line is one device's description URL. If your streamer's address appears, the network path is good — re-check the Local Network permission above, and confirm the device is in UPnP/DLNA renderer mode. That URL is also exactly what Add streamer by IP or description URL… accepts, so you can paste it straight into Fidelia and be done.

If your streamer is missing but other devices appear, multicast is fine and the streamer simply isn't announcing itself — restart it, then add it by address. If nothing prints at all, the network is blocking multicast between the Mac and the streamer; adding by address usually still works, because that talks to the device directly. Either way, contact support with the output and we can pinpoint it quickly.

Network Library (Lyrion / LMS)

Separately from playing to a streamer, Fidelia can play from a Lyrion Music Server (formerly Logitech Media Server). Its catalog joins your library as its own section in the sidebar, and its tracks browse, search, sort and play like any others.

Add a server with the + beside NETWORK in the sidebar, or File → Connect to Music Server…. Fidelia finds servers on your network automatically; you can also add one by address if it lives elsewhere.

Try it before you buy it — the Network module has a free trial, so you can point Fidelia at your server or streamer and hear it working before you decide.

How a server's music is treated

Make Primary

When you own the same recording more than once, Fidelia plays the best copy it can. Make Primary pins your choice instead — right-click a track or an album and choose it. A pin beats quality ranking, but yields to availability: if the copy you pinned is on a server that is currently offline, Fidelia plays a copy that can actually play rather than failing.

Bridge

Bridge lets Fidelia on iPhone or iPad browse and play the library on your Mac over your own network — your music, not a cloud service. Both devices must be signed in to the same iCloud account and on the same network.

The pull always happens from the mobile side. There is nothing to switch on here — the Mac is simply the source. Start the sync from Fidelia's settings there; the Mac shows what it last served, and to which device, under Settings → General → Remote.

What travels: your music servers, radio stations, settings and version pins, along with the tracks themselves and their artwork.

Keep Offline

Keep Offline downloads chosen albums or playlists to the device so they play with no network at all — on a plane, or underground. Fidelia keeps what you asked for up to date as the source changes, and tells you what it is doing in the status strip while it works.

Bit-Perfect & Exclusive Mode

These options live in Settings → Advanced and control how Fidelia interacts with the output hardware and DSP chain.

DSD Playback

Fidelia plays DSD files (.dsf and .dff) directly — no conversion, no orphaned files. By default the 1-bit DSD stream is decoded to high-resolution PCM in real time, so DSD plays gaplessly on any output device and rides the same signal path — and the same SRC settings — as the rest of your library.

Bit-Perfect DSD over PCM (DoP)

For DACs that decode DSD natively, Settings → Output → Play DSD bit-perfect (DoP) sends the untouched DSD bitstream to the DAC inside a standard PCM carrier (the DoP standard). Enable it per device.

Sample Rate Conversion (SRC)

When the source file's sample rate does not match the active device rate, Fidelia applies sample rate conversion from the Settings → Audio Engine tab.

Dither

When reducing effective bit depth, Fidelia applies dither from the Settings → Audio Engine tab to preserve low-level detail.

HeadSpace

HeadSpace is Fidelia's headphone virtualization DSP. It simulates the spatial characteristics of loudspeaker listening through headphones, reducing fatigue and creating a natural soundstage. Configure it in Settings → HeadSpace.

Crossfeed

Equalization

Per-Band Crossfeed

Monitoring

HeadSpace is designed for headphone listening only. Disable it when using speakers.

ReplayGain

ReplayGain evens out the volume between tracks, so a quiet recording and a loud master play at a comparable level without reaching for the volume between songs. Fidelia reads the ReplayGain values already written into your files — it neither re-analyzes nor alters your audio. Set the mode in Settings → Output.

Clip-safe. Fidelia never lets ReplayGain push a track into clipping. Using the peak value in the tags, it caps the applied gain so the loudest sample stays at or below full scale — a positive gain is applied as far as the track's own headroom allows, and trimmed only if it would otherwise clip. You can assign positive ReplayGain values (common on quiet and classical albums) with confidence; Fidelia keeps them safe. This relies on the peak values your tagger writes alongside the gains.

Fidelia reads ReplayGain tags from FLAC, MP3, ALAC/M4A, and AAC files. ReplayGain is applied as a pre-gain, ahead of the DSP chain and the volume fader, and is bypassed in Bit-Perfect mode and for bit-exact DSD (DoP), where the original signal is delivered untouched.

Audio Units

Fidelia hosts Audio Unit (AU) plug-ins in the playback DSP chain. Add EQ, reverb, metering, and other compatible Audio Unit effects for real-time processing.

Opening a slot is instant: your plug-ins appear at once while Fidelia scans them quietly in the background. A slow or unresponsive plug-in won't hold up the list — each is given a moment to respond, then set aside if it doesn't, and stepped around the next time you open the picker, so the slot stays responsive even with a large or misbehaving collection.

Editor Window

When you open a plug-in's editor, Fidelia adds a thin bar at the top of the window with:

Editor windows open at each plug-in's natural size. Resizing, where supported, is handled by the plug-in itself inside its view.

Plugin Hosting

Fidelia hosts Audio Unit plug-ins either in-process (loaded directly into Fidelia's own memory, lowest latency, matches Logic Pro and Fidelia 1.x) or out-of-process (routed through macOS's AUHostingServiceXPC sandbox, slightly higher latency, but isolated from Fidelia). The choice is made per slot — manage it in Settings → Plugins.

Per-Slot Hosting Preference

Each slot has a three-way picker:

Settings → Plugins

The Plugins pane shows a row per effect slot with:

PACE / iLok-Protected Plug-ins

Plug-ins from Moog, Strymon, UAD, UADx, and other PACE- or iLok-protected vendors need special runtime privileges to load in-process. With Auto (the default), Fidelia's pre-flight scanner detects these plug-ins and routes them straight to out-of-process hosting on first load — no authorization dialogs appear.

If you set a slot to Force In-Process and load a PACE-protected plug-in into it, macOS may present one or more one-time authorization dialogs (for example, a Lower Security Settings dialog or a PACE licensing alert). These are macOS / PACE prompts, not Fidelia errors. Approving them unlocks the plug-in and the dialogs won't appear again for that plug-in.

Hosting preference is per slot, not per plug-in. If you swap a different plug-in into a slot, the new plug-in inherits the slot's setting. For most users, leaving every slot on Auto is the right choice — Fidelia's scanner handles PACE-protected plug-ins correctly without user intervention.

Switching a Loaded Plug-in's Mode

Format Conversion

Right-click songs in the library and choose Convert Format… to convert between formats.

Metadata (title, artist, album, artwork, etc.) is preserved in converted FLAC and M4A files. WAV and AIFF output does not include metadata. To edit metadata after import, see Editing Metadata.

DSD & APE

DSD — DSF and DSDIFF (.dsf, .dff) play directly, decoded to PCM in real time by the engine. Nothing is converted on import and no extra files are written next to your originals. To keep a permanent PCM copy, use Convert Format… to export to ALAC or FLAC.

Monkey's Audio (.ape) is converted to Apple Lossless on import; the converted file plays natively and the original is kept alongside.

Tags are read from each source file — DSF via its embedded ID3v2 chunk, APE via the APEv2 footer. (DSDIFF tag chunks aren't read yet, so a .dff without external tags falls back to its filename.)

Fidelia Remote

Fidelia Remote is the free companion app for iPhone and iPad: your library, what is playing, and full transport controls, over your own network.

It controls either Fidelia — the one on your Mac, or the one on another iPhone or iPad. Both advertise themselves the same way, so a handheld playing to the DAC in the living room is as controllable from the sofa as the Mac is.

iOS asks for Local Network permission the first time, on both the controller and the player. If discovery finds nothing, that grant is the first thing to check.

Music.app Integration

Enable Music.app integration in Settings → General to browse your Apple Music library directly in Fidelia. Songs, playlists, and artwork are imported read-only.

Appearance

Settings → General → Appearance chooses how Fidelia draws:

The player window keeps its dark instrument face in every appearance, exactly as it does under system Light today.

Sending a Diagnostic Report

Help → Send Diagnostic Report gathers what we need to understand a problem and opens a message with it attached. It carries the last fifteen minutes of Fidelia's own log, so the useful order is: reproduce the problem, then send the report — everything the playback and streaming paths recorded comes with it.

The report contains no audio, and no file paths beyond the names of tracks involved in whatever went wrong.

Keyboard Shortcuts

Play / PauseSpace
Next Track⌘→
Previous Track⌘←
Seek Back / Forward⌥⌘← / ⌥⌘→
Volume Up / Down (0.5 dB)⌥⌘↑ / ⌥⌘↓
Recall Station Preset 1–9⌃1 – ⌃9
Import to Library⌘O
Add to Preview Playlist⇧⌘O
Toggle Library⌘L
Toggle Mini Player⇧⌘M
Player On Top⇧⌘T
Large / Medium / Small / Smaller⌘1 – ⌘4
DIM⇧⌘D
Mute⌘M
Find Artwork Online⌥⌘A
Get Info (selected song[s])⌘I

All shortcuts are customizable in Settings → Commands.

Supported Formats

Troubleshooting

Contact Support

Questions, feedback, or bug reports — reach us at support@audiofile.engineering

audiofile.engineering