Download your Spotify playlists and songs along with album art
Audio Share can share Windows/Linux computer's audio to Android phone
MuldeR's OpenSource Projects
wxMP3gain is a free front-end for the MP3gain.
Open-source music library management system
A open source video to convert video from any format to modern codecs
C64 Emulator
For cheap music players: Puts random numbers in front of every file.
MPEG-Audio Layer 2 (MP2) encoder
An HTML5 danmaku video player
Audio Editor
macOS System-wide audio equalizer & volume mixer
Convert movies and TV shows to flashcards
Converts and re-encodes music to 432Hz
Free music notation & composition software