Autodisc allows you to specify a jukebox to continuously play songs.
Create for server spawns to liven up the place.
/autodisc set - Set the location of the jukebox to your current position ( you then need to place the jukebox there )
/autodisc play - Force the jukebox to start playing a new song
/autodisc delay - Set the delay before another song starts in ticks ( 20 ticks = 1 second )
Players can steal discs by right-clicking on the jukebox, so make sure it is not player accessible.