There are 2 Soundtracks listed in the mp3 section of GH.

One divided into 3 Discs and one full Soundtrack.

As far as I know, there has been a Soundtrack CD released, so which one of those 2 is it?
I don't like Gamerips too much, most of the time their quality is inferior to the one on the actual Soundtrack release, so I always try to get the OST.

http://gh.ffshrine.org/soundtracks/592

That's the official release for Melee.

Yeah that's the CD with the Live Orchestra playing some music from the game, but wasn't there a Soundtrack released with the ingame versions?

Hmm, there's nothing on Wikipedia mentioning a Soundtrack release besides this Smashing Live CD.

I guess that means there are only gamerips of this one.

Yup. There's three different releases of the same Live Orchestra release, so a rip is the best way to go.