Cog Cog
Audio Player for macOS

A free and open source audio player for macOS.

Download v3549 42.95 MB
Published Apr 25, 2026, 7:29 AM · Requires macOS 10.15
  • view commit • MIDI: Updated SpessaSynth with major changes
  • view commit • Chore: Clean up more compiler warnings
  • view commit • Fixed player getting stuck when adding files
Older versions ↓
Download on the Mac App Store
Features

What Cog does

Supported Formats

Plays almost anything

  • MP3 (including free format, up to 640kbps; via minimp3)
  • WAV
  • MPEG-4 container, including chapter support
  • Matroska container, including chapter support
  • AAC
    • LC-AAC
    • HE-AAC
    • HE-AACv2
    • xHE-AAC (USAC)
  • Apple Lossless (ALAC)
  • FLAC (including OggFLAC)
  • Ogg Opus
  • Ogg Vorbis
  • AC3
  • Windows Media Audio
  • DTS
  • TrueHD
  • HDCD
  • TTA True Audio
  • TAK (Tom's Lossless Audio Kompressor)
  • Monkey's Audio (APE)
  • APL (APE Linking File)
  • TwinVQ
  • RealAudio
  • ATRAC3
  • Musepack
  • WavPack, including DSD support
  • Interchange File Format (IFF) including DSDIFF
  • DSD Stream File (DFF)
  • Wideband Single-bit Data (WSD)
  • MIDI
    • SoundFont, DLS, and embedded soundbank support via a native port of the SpessaSynth synthesizer
    • FM synthesis via Nuked OPL3
    • Sound Canvas emulation via Nuked SC55
    • Audio Unit synthesizer support, including Apple's DLSMusicDevice
  • Shorten
  • Tracker music
  • SID
  • Game music
    • GBS (Game Boy)
    • NSF (Nintendo)
    • SPC and SNSF (Super Nintendo)
    • VGM (Master System, Genesis/Mega Drive, Game Gear, etc)
    • VGZ (compressed variant of the above)
    • PSF (PlayStation)
    • SSF (Saturn)
    • DSF (Dreamcast)
    • QSF (Q-Sound)
    • USF (Nintendo 64)
    • NCSF and 2SF (Nintendo DS)
    • Organya (Cave Story)
    • Streamed music via vgmstream
  • Archive files
    • ZIP
    • RAR
    • GZip
    • 7Z
Archive

Older versions

v3546 Apr 24, 2026, 8:07 AM Download 42.94 MB
  • view commit • MIDI: Updated SpessaSynth with numerous fixes
  • view commit • Sentry: Updated sentry-cocoa to version 9.11.0
  • view commit • Chore: Clean up some compiler warnings
  • view commit • Data Storage: Commit asynchronously in more places
v3542 Apr 23, 2026, 9:11 AM Download 42.94 MB
  • view commit • MIDI: Updated SpessaSynth with sflist support
v3405 Mar 14, 2026, 9:44 PM Download 46.03 MB
  • view commit • TagLib: Updated TagLib to version 2.2.1
v3404 Mar 10, 2026, 5:51 AM Download 45.95 MB
  • view commit • Debugging: Add more verbose bad URL logging
  • view commit • Highly Complete: Update lazyusf2
  • view commit • Audio Playback: One more safety check
  • view commit • VGMStream: Updated libvgmstream code base
v3400 Mar 5, 2026, 4:28 AM Download 45.95 MB
  • view commit • Output: Attempt to fix possible race condition
  • view commit • DSP Chain: Implement Signalsmith Stretch as option
  • view commit • Touched by Xcode
  • view commit • VGMStream: Updated libvgmstream code base
  • view commit • DSP Chain: Last remaining fixes for Signalsmith
  • view commit • App Delegate: Silence warning on macOS 12+
  • view commit • DSP Chain: Correct Signalsmith Stretch engine name
v3349 Dec 13, 2025, 2:59 AM Download 46 MB
  • view commit • Highly Complete: Move silence seconds declaration
  • view commit • Highly Complete: Move GSF sample rate reporting
  • view commit • TagLib: Don't collide with inputs' own chapters
  • view commit • FFmpeg: Signal tag updates for normal files
v3345 Dec 7, 2025, 7:17 AM Download 46 MB
  • view commit • FFmpeg: Fix unmapped tags' name case matching
  • view commit • Audio Player: Work around some potential crashes
v3343 Oct 9, 2025, 5:33 AM Download 46.41 MB
  • view commit • Bug Fix: Resize album art for info button
v2405 Jun 23, 2022, 2:55 AM Download 39.86 MB
  • view commit • [Playlist Info Loader] Do not clear if loading
  • view commit • Serialize persistent store update to main thread
  • view commit • Updated VGMStream to r1745-37-g776c4d8c
v2402 Jun 22, 2022, 11:57 PM Download 39.86 MB
  • view commit • Changed updater script to handle new version strings
  • view commit • AboutWindow adjustments
  • view commit • Merge pull request #280 from losnoco/nevack/about-window
  • view commit • Fix runtime warnings in Window/AboutWindowController.xib
  • view commit • [About Window] Reorganized credits and added @nevack and myself in them
  • view commit • [About Window] Fix
  • view commit • Sync version number with main branch
v2395 Jun 22, 2022, 8:12 AM Download 39.86 MB
  • view commit • Add Sandbox notice to README
  • view commit • Removed Sparkle
  • view commit • Change version numbering system
  • view commit • Change the product install path to /Applications
  • view commit • [Sandbox] Update Info.plist generator
  • view commit • Update Info.plist
  • view commit • Remove stray entitlement from Sparkle
  • view commit • Update Patreon credits
  • view commit • [Core Audio Output] Guard against nil pointer
  • view commit • [Sandbox Configuration] Fix nil pointer issues
  • view commit • [Sandbox Configuration] Do not delete path on fail
  • view commit • [Sandbox Configuration] Delete from storage later
  • view commit • [Sandbox Configuration] Do more checks on test
  • view commit • Revert "Remove stray entitlement from Sparkle"
  • view commit • Revert "Removed Sparkle"
  • view commit • [Info Plist] Auto format XML escapes
  • view commit • [Crashlytics] Require asking user consent
  • view commit • [About Dialog] Switched to WebView for credits
  • view commit • [Main Menu] Added Privacy Policy link in App Menu
  • view commit • Remove deep forced code signing option
  • view commit • Completely overhaul code signing practices
  • view commit • [Volume Control] Only initialize view once
  • view commit • Remove developer supplied configuration file
  • view commit • Assign blank development team in project files
  • view commit • One last attempt to fix CI
Legacy

Very old builds

Version 1148
Mountain Lion
Version 2405
Sierra
Version 3349
High Sierra
Version 3405
Mojave