It's funny you should mention that...I did this a few weeks ago..I just held my MP3 player up to the intercom and sucess and a fast run out of Walmart,That's just say this is why I get along great with my guy friends...This is the song I played throughout Walmart
YouTube - Daft Punk Technologic video (creepy) Of course,It took the employees awile to figure out what was happening...I know,childish...But I always wanted to do it and I did :)