There are many radio stations. I would love to be able to DJ for a station or maybe 2. All this wold require I believe is say every 2 weeks, a file be transfered from the DJ to the admin/ owner of the site with a few songs, and some voice recordings, (could be player adds, typed/sold to the dj) Then the different radio stations would get different music played on them. it would add immersion, and a nice little edge to people who got to hear their own add over the radio.
Music plays, chosen by the DJ, then the DJ comes on, "We have been rocking out courtesy of Mikes arms. Mikes arms, we got the pew pew, to solve all you're QQ needs." Then more music.