Is this audio from the DS or Wii version? Sounds pretty compressed so I can't tell for sure but I feel like it's the DS and we still need a Wii rip
Surprisingly, from a little looking around I've done + extracting the music files from my ISO of the Wii game, this rip appears to be from the Wii version.
The higher quality tracks, at least in regards to sample rate, actually appear to be on the DS version, surprisingly enough. Although they do seem to have some static-y compression/quality loss of their own.
Kinda strange - you'd expect the higher quality music to be on the system that can stream audio data directly from the DVD, no?
What's also odd, is that while the audio files themselves are all stored at roughly 32kHz, which would be perfectly listenable, the audio within appears to have been downsampled to somewhere around 16kHz for some reason, thus resulting in the compressed sound.
I'm not sure why the developers might have done that, it's not like it saves any space, as the file is still stored at 32kHz, it just sounds worse.