Anyone happens to have the OST? I can't find it anywhere..

You'll have to be a bit more specific with this one. Do you mean the OST to the American dub of the show by Mark Menza (which is basically entirely unreleased), the OST to the Japanese version of the show (which is mostly unreleased, though there are some YouTube versions out there), or do you mean one of the two games (GT Transformation GBA or GT Final Bout)?

Oops, uhm. I'm looking for the OST for the japanese anime. And if someone happens to have some unreleased tracks, because I heard there are a lot of missing tracks, then that would be much appreciated too.

Let me just quickly fill you in on what I know. The vast majority of the GT score is missing, but there is a lot of interest in ripping the music from the DVDs, especially with how Funimation is encoding them (which seems to make it possible to rip the music without the voices/sfx). At this point, the best stuff you'll find is on YouTube by typing in "Dragonball GT Unreleased." Most of what anyone would have is probably going to be a rip from YouTube anyway. In particular, a guy named "Colonel Silver" has a lot of really good stuff up that you should check out.

You may already be aware of this, but the OST for Dragonball: Path to Power has a bunch of GT BGM, and I know there's a link to it in the download links section of the forum. This constitutes the only official GT BGM release at present.

To that end, hopefully someone will upload some high-quality rips sometime soon.

Edit: One other thing - some GT BGM is in the soundtrack to Dragonball Z Sparking! Neo, the Japanese soundtrack to one of the Budokai Tenkaichi games.

Oh okay, thanks a lot for the information! That really helps. :) I'm hoping someone rips the tracks soon.

Here's a link to a message board thread where you can find a recently-begun GT soundtrack project. There are only two tracks there now, but I'm sure more are on the way:

http://db.schuby.org/daizex/viewtopic.php?t=9596