How can I hear streaming live audio on my iPod touch?

The iPod touch will access the internet via a WiFi connection. My question is... I have a SIRIUS Satellite Radio subscription, how can I sign on and be able to hear their live audio? I go through all the pages on my iPod, just like I would on my PC but it never connects. I also tried to connect through howardstern.com but can't get that to produce sound either. Has anyone else had this and were they able to troubleshoot it?