Cool similar thing happened to me!
I was in my room the other day and my brother was watching some football (soccer) highlights thing in the living room and i could hear Grace Kelly really quietly. I was quite scared because i didn't know where it was coming from so i checked the websites i was on on the computer but none had music playing. Then i went downstairs and it got louder so i knew it was down there. I though my mum might has borrowed my LICM CD (she likes him too!!!) but she didn't. Then i went into the living room and it was on the TV!!! But the wierd thing was when Grace Kelly finished they put Relax on!!!
Wow that was quite long!