Pocket PC peeps can get excited now, because with the release of Pocket XM Radio Pro, you can listen to all your XM Radio Online content anywhere you want.

Yeah sure, it's $19.95, but if you're a cheapass, you can get only the XMRO subscription for $7.99/month and justify the whopping $20 it cost you to download the software. And you can listen to Liquid Metal anywhere.

There's also some additional info on this here. 

Thanks G-Spin!