Yes, the title might be a little off but the Belkin RockStar is somewhat of a real MP3 device for gangs, that is more than one user. Via iLounge
“Belkin’s RockStar ($20) is a star-shaped audio hub that lets people connect their iPods (or other MP3 players) and headphones. Multiple playback devices can be connected to the hub, sharing the audio from each source simultaneously with multiple headphone ports, and letting users hear either a single song, or multiple songs mixed together. One of the ports is input-only, with a wired connector built-in; the other five can be toggled between input and output. One cable will be included for connection to a second audio device.”
