Jann180: Did you enable playMP3 in the Grayface patch .ini? I don't think you need to move the music around.
As for window resolution, look on Grayface's site. He has patches for m&m 6-8.
I can confirm you need to copy the MP3s from Sound to Music for MM6. Just had to last night after setting up the patch.
PhallusOfWoe, don't rename the Sounds folder. The game still relies on it even after enabling MP3s. Create a new Music folder and copy the MP3s there. Then open MM6.ini, set PlayMP3=1 and you're all set.
As to resolution, I can't help you there and we're talking about the wrong MM, so I can't ask my brother in some far off dungeon to assist you either.