I'd completely forgotten all about this but suddenly just remembered it. I saw an article about an application on digg.com called Songbird. Basically what it is is a web browser/media player mash-up that looks a bit like iTunes. It's great for surfing music blogs such as Gorrilla Vs Bear or Music is Art because it automatically scans the pages for MP3 files and plays them like you would a normal playlist. It's still in early stages of development ie. you can't yet burn CDs or import your own music from CDs but they promise that these will be incorporated soon.
Go check it out if you think this might be your cuppa!