I've decided to make available my recording of the music from the sound test:
The total size is 172 MB, so I split it up into two .rar files. The last track, "Birthday Bumps", is very strange. There are at least two different varieties and I made sure to capture both, so you'll find two tracks. I don't know if my particular cartridge had a problem, or if the scratchy noises were intentional, but they didn't always occur. It was just luck that I was able to record them, because they are irritating enough to be quite amusing. I made this recording about 6 years ago.