Shorter? As in the length of the replacement song?
Argh, so it seems whatever song I put as a replacement to an original track...would have to be a MIDI file. I wouldn't be able to replace it with, say, an MP# of one of these..
http://www.zreomusic.com/z5
I suppose it's a hopeless cause then. Damn, would have really made the HD texture pack pop....audio is so important.

I was trying to replace a music, but in The Legend of Zelda: Wind Waker. Is it possible to convert the music and insert it in the game? If yes, how to do?