Modular Audio Player is a desktop music player and library browser for Linux built from freely arrangeable dock panels. A lightweight Linux alternative to foobar2000 for people who like to lay out their own player: playlist, library tree, track properties, waveform, FFT spectrum and analysis panels can be shown, hidden, floated and re-docked, and the layout is saved.

Key Features:

• Real library scan of your Music folder (MP3, FLAC, OGG Vorbis/Opus, M4A/AAC, WAV) with a built-in tag reader (ID3v1/ID3v2, Vorbis comments, MP4 atoms, RIFF INFO), stream info (bitrate, sample rate, channels, duration) and embedded cover art.
• Multiple playlist tabs, search filter, shuffle / repeat-track / repeat-playlist, drag-free queue from the Artist/Album tree, M3U playlist import and export.
• Waveform overview (click to seek) and live FFT spectrum computed from the decoded audio samples at the playback position (uses the bundled ffmpeg decoder).
• Analysis panel: real peak / RMS (dBFS) and clipped-sample count per track.
• Playback through the bundled ffmpeg engine to your PulseAudio / PipeWire server (audio-playback interface). Seek, pause, stop and volume controls.
• Vietnamese / English donate header switch.

Playback is decoded by ffmpeg; if no audio server can be reached the app says so and falls back to a silent preview of the waveform and spectrum.

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by the foobar2000 project or its owner.