I don't know where to draw the line either. All of those tracks are available here, and are listed in the order given:
http://rareware.com/games/kameo/downloads.html
This set of mp3s looks official enough, with Rare putting them up as a set of bonus tracks that aren't covered on their official soundtrack CD.
However, it seems like there are likely to be hundreds, or maybe thousands of small web releases, including cross-fade demos that come out for all the H games. Then there are composers who sometimes put mp3s up on their blogs. I think we will have to come up with some guidelines.