Why is everyone saying Rhapsody's web interface doesn't work with Macs? I use it on my PowerBook fairly regularly. I'm not using the paid service, just the 25 songs/month free version, but it works fine. It's true that you need a plugin, but it's not Windows only, there are Mac and Windows version.
It was fairly big news in the Mac world when Real announced Mac support for Rhapsody.
From Rhapsody.com:
"Rhapsody.com is a streamlined, Internet-only version of RealNetworks' Rhapsody, called (sic) now available. Because Rhapsody.com exists on the World Wide Web, you can use it from most computers that have a browser installed and access to the Internet, including Mac and Linux. "