FLAC is a free lossless compressed audio format which supports streaming and archival. The FLAC project maintains the format and provides a reference encoder/decoder and input plugins for several popular audio players.
open source media player designed to be as modular and as extendable as possible.
dvd2xbox is a DVD/CD-R to hdd copy program for the xbox which supports the formats UDF/ISO9660/CDDA (Audio 2 Ogg ripping with freecddb naming, dvd ripping with libdvdread). It provides a simple all at once copy mode and a win commander style disc browser
Aamir Media player plays 30 formats of audio/video files with very small size but with great functionality.