Actually (now that I understand how 365 works and after joining up), it works extremely well with MC. You can add any of the 365 stations to any playlist (go to Playing Now, right click on the stream, Send To <your playlist>). Forget about MC's Web Media (it is meant for stations on it's list...not 3rd party ones like 365 or from DigitallyImported). Though it does not show the specific currently playing track in MC, 365 displays said by using a small browser window (TPW). Like I said earlier, the mp3 streaming stations work very well...so forget about wma. What a station actually streams is hard to determine without connecting...though.
10-27
edit: Be aware...these are radio stations with ads (unless you subscribe). Little ad pop-ups do pop (even through FireBird...but they may not if Track Playing Window is closed). Huge variety none-the-less.
edit2: Appears to be ad free if the TPW is closed