Top Spin Custom Soundtrack?

[Dyslexic Chaos]

Hi guys, It says on the back of the box that this game supports custom soundtracks, but I have yet to be able to find a way to use it. can canyone tell me how to use them?

PS, I know this should be in the sports section, but noones ever in there, and I only rented this game untill tommorow...

[Rammer]

There are no custom soundtrax in the game. On the back of my box it's blacked out so I don't know what you're looking at.