I'm trying to do a RMAA test (which basically determines the quality of audio hardware) on my NDS. I have a G6 lite flashcart, and I plan to use an audigy2nx for recording. What I need is a way to play back an audio file with as little extra processing as possible, hence the question: what would be the 'native' audio file format for the NDS (bitdepth/sample rate), and what's the best way to play it? What I tried to do so far is use mediaplayer extend (which is basically moonshell, as I've heard) and a 16 bit 44100 Hz wav file. The results, however, are a bit strange, so I suspect that something is wrong on the software side.