XM7Play by sverx is a XM player based on libXM7. It plays .xm’s and most common format .mod’s with up to 16 channels directly from your FAT memory card.

XM7(Play) DJ is a special edition for disc jockeys. The changes in comparison to the regular version is:

* the module should load and be ready for replay, instead of starting immediately
* it should be possible to stop and restart the module from the current pattern
* it should be possible to skip to next or to previous pattern while stopped or even while playing
the program should visually show the number of the current pattern and the total number of patterns in the module
* the music output should be mono, for the DJ mixer.

http://forum.gbadev.org/viewtopic.php?t=17457