Wooohoo found it! It turns out X929's website allows you to go through all the songs they've played.
It's called "If rap gets jealous", by K'Naan, and oddly enough it features Kirk Hammett of Mettallica on guitar.
It's a freakin cool song, I'd suggest listening to it. here's teh link....
http://www.youtube.com/watch?v=DlBFLuW-_ek