don't try to use WAVs like MP3s lol
Hmmm...What do you mean by that?
I managed to successfully insert one wav file before using an older version of the program(it did not loop, however).
WAVs in GBA are intended to be short clips such as sound effects and instruments, not full songs. there are bound to be performance issues if you're attempting to stream an entire song at once as the engine was not designed to handle these