Gmu is a music player for the GP2X. Gmu supports Ogg Vorbis, MP3, Musepack, FLAC and various module formats (such as s3m, stm, it, etc.). It also includes a playlist and a file browser.
Features:
Supports Ogg Vorbis, MP3, Musepack (MPC), FLAC, various module formats (MOD, XM, IT, S3M, STM, …) and lots of ADLIB tracker formats
m3u playlist import/export
Random playback mode
file browser
playlist
cover viewer (Gmu supports jpg, png and bmp image files and cover images embedded into ID3v2 tags)
hold function (turns off display backlight for power saving)
Customizable key mappings and skin support