UPDATE: So I grabbed those tracks from Soundcloud and loaded up the game to get the credits and wound up here:
http://www.musicme.com/#/Stan-Lepard,-Dynamedion-Gbr,-Ea-Games-Soundtrack/compilations/Peggle-2-0067003825450.html
I'm not familiar with MusicMe but it looks like you can buy the whole soundtrack in Euros. There's only a couple pieces that aren't on Soundcloud so I'm probably, almost definitely going to record those myself and then I'll post the whole thing here. Potentially over the weekend. :)
Oh excellent!! Plants vs Zombies Adventure too! In digging up stuff about Peggle 2 I saw they were both recorded at the same place and same time. It explains a lot of the vibe they both share. Didn't even think about SoundCloud though, thanks for the links!!