The file size limitation will not let you upload a music file that has much playing time, so you won't be able to store it on the server like you do with pictures or other attachments.

The guys that wrote the BB software have disabled the embed function so that won't work either. You can store the music file on a webserver somewhere and link to that. Should play the tune if someone clicks on your link in your post. I think you could also embed a music file in a webpage and have that URL come up when someone clicks on your post. Haven't tried that yet, so I'm not sure if that will work either.

Better question is: Have you figured out how to save the tunes you're listening to on your Internet radio so you can add them to your library and not wait until the I-net DJ decides to play the tune again so you can hear it?