2004 Buick Century Radio Aux Inputs

Anyway to add aux inputs to a OEM 2004 AM/FM single CD player? Would like to play portable XM radio through car speakers. Haven't had much luck with the FM modulators. Any other options out there?
Thanks

Why not get a new radio? They don't cost that much, and will play XM, mp3's, etc.

I know what you are talking about......trying to find an FM station that has no music on it, to try and use an FM transmitter is hard.....and you drive a few miles and then you get interference.....

For about 200-250 bucks, you can get Sirius XM built into a radio, that plays mp3's, even records for about 40 minutes that can be replayed, something your GM radio could never do....

In addition, some have built in Bluetooth, for hands free talking.....