n-Track Studio is an audio and MIDI multitrack recorder that turns your computer into a full-fledged recording studio. You can record and playback a virtually unlimited number of audio and MIDI tracks. The program supports simultaneous recording from multiple 16-bit and 24-bit soundcards, and real-time audio effects can be applied non-destructively to each track. Built-in effects include Reverb, Multiband Compression, Chorus, Delay, Pitch Shift, Graphic and Parametric EQ, and spectrum analyzer. The program can use third party VST plug-ins to process audio signals in real-time. Effects can also be used to process the recorded signal in real-time. MIDI tracks can be imported end exported to regular MIDI files, and edited using the built in piano-roll based MIDI editing window. The program supports VSTi instrument plug-ins for sample accurate software MIDI playback. Volume and pan evolution can be programmed by drawing on the timeline window.
Beets is a media library management system designed for obsessive-compulsive music geeks. It catalogs your collection, automatically improving its metadata as it goes using the MusicBrainz database. It also downloads cover art for albums it imports. Then it provides a bouquet of tools for manipulating and accessing your music. Beets also includes a music player that speaks the MPD protocol, so you can play music in your beets library using any MPD client.
fretscpp is strongly inspired by the original FoF, reusing artwork to a large extent, with the source code rewritten from scratch. C++ instead of python should improve performance and allow easier support for features like whammy. It is playable, but some non-critical features are still missing.
playerdo is a script for controlling a variety of different media players from a single command line interface. It is intended to be used with keyboard shortcuts, especially the media keys (play/pause, next, etc.) found on many keyboards. It automatically detects which media player is running and tries to do the right thing.
Pogo is probably the simplest and fastest audio player for Linux. Its elementary-inspired design uses the screen-space very efficiently. Pogo is especially well-suited for people who organize their music by albums on the hard drive. The main interface components are a directory tree and a playlist that groups albums in an innovative way.