Sadly, I'm working on project for home written Nintendo DS game and it appears that mod is the only format that works for longer music files. It can take raw data too, but that seems to be reserved for shorter sound affect files.
if straightly pick the downloaded mod format file from internet,or creating a new mod format file with Modplug tracker,they all can be played in NDS
but the matter is when turn the mid format file into mod format file by Modplug tracker,and then pick the translated mod in NDS,it can't be played,it donesn't work.
who might tell how to translate mid to mod that can be played well in NDS,thank you very much.