Okay, so I know this thread is kind of old, but I just finished playing the msu patch of DKC3 GBA restored soundtrack. I hope it's okay to
link to the forum where I found out how to do it and all that stuff (no links to any roms or anything). It took me a while to figure out how to patch it and I needed (a lot of) help from my husband. If you do a ctrl+f for Sam Miller you'll find Jammin' Sam's amazing GBA soundtrack restoration.
I played though the entire thing yesterday (I was really tired and had to beat the final secret boss today because it was 2:30 and my brains were gone last night) on my SNES with my flash cart. It sounds so good and makes me actually enjoy playing through DKC3.
AAANNNYYYWWWAAAYYYY.... one weird thing that I wanted to point out while I was playing was my inability to get all of the banana birds with this hack. It could just be on my end. For the Brothers Bear trading stuff, I did the whole birthday gift exchange but never ended up with the bowling ball in my inventory so I couldn't take it to Meknos and get fired from the cannon to get the last bird. I mean, it's whatever because I've beaten the whole game dozens of times, I just wanted to share my experience.