Gmu is a music player for the Dingoo. 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.

Quote:

Here is another Gmu release of the upcoming Gmu 0.7.0! This time it is a version for the GP2X Wiz. It also runs on the GP2X F100/F200 with the Open2X firmware installed. Beware that this is a very experimental release. Unfortunately I currently do not own a Wiz myself, so I was not able to test it on the Wiz.

http://wejp.k.vu/gmu/gmu-0-7-0_beta4-for-the-gp2x-wiz-released