So Massive has pointed me to the official site of the Polo PSP, where the song runs in the background:
Official Polo PSP Site (Look for the Polo PSP image

But you can also hear the song here (via www.musiquedepub.com):

Both sources are of lousy quality, but you really get the idea and it seems to be a real hard-hitter for the next party. Just keeping an ear out for a hi-fi version.

Wonderfull! This could be an absolute floorfiller, if I only knew the name of the artist. I´d buy it directly. Somewhere somebody writes the music was compose by a certain JohanSebastian, but I can´t find anything on the net. So if anybody knows more on this track, don´t hesitate and post the name!