I'm doing some work on a site that let's users create their own mini-sites. My client wants users to be able to upload music and have it continuously play as visitors navigate the site. The only good way I can think of doing this is an Iframe, but obviously that will than get rid of unique URLs. I also don't want to use Ajax or a cookie to track the song's progress.
I was thinking maybe there was a way to have a popup player that closed simultaneously when the user exited the site?
Any suggestions would be greatly appreciated.