MKVEXtractGUI is a demultiplexer that allow you to demux mkv streams.
jPhone is a tiny, free utility to access the files on an iPhone, iPod Touch.
MP3 Library Player catalogues/plays MP3 files with automatic Lyrics & Biography.
Simplifies and speeds up the task of downloading song lyrics.
iTunes can Manage and play your music collection with drag-and-drop simplicity.
Songwriting companion to fine-tune the creation and management of songs