Streaming music service Grooveshark is throwing its hat in the radio service ring today with the debut of Broadcast, which is accessible to the public starting today.

Grooveshark rose to fame as it allowed people to upload and play their own music instead of investing in expensive works with music publishers, whom didn’t exactly just like this method. (To date, all the main music companies are involved with legal battles with Grooveshark.) Right now, the service is trying to strike out on a new model that will ideally make all sides happy, such as fans that prefer it over more ridged music services like Pandora.

Grooveshark’s Broadcast is trying to recreate the experience of a terrestrial (aka old school) radio’s DJ shift. A Grooveshark user will begin broadcasting their music selection, which is accessible to anyone who wants to listen in. From there yoU’ll simply play songs from your own collection of music and also insert 30-second recordings that will be able to introduce songs, sets, or offer commentary about anything. When you stop DJing, you can either hand off your audience to another DJ or your station goes off line.

This is a totally lean back experience. There aren’t any back or forward buttons and you’re essentially relying on good DJs to play music you enjoy, said Grooveshark CEO and co-founder Sam Tarantino in an interview with VentureBeat. What we’re wishing is to turn radio listeners into broadcast personalities.

There’s also lots of social interactions built-into the Broadcast experience. The DJ can now see everyone who’s now listening to his session on the sidebar. Those listeners can rate songs as they’re played, make comments, and make information on future songs. The DJ broadcasting comes with a queue of music that can be added to, which could quickly be altered based on the mood of the listening audience.

Tarantino said the new Broadcast radio service isn’t permitted to pay music companies for usage through SoundExchange (like Pandora and other smart radio service do) since the new service is mixed usage. Grooveshark is hoping to come to an agreement with those labels to license music in a way that makes sense, however has yet to reach a lasting agreement.

Gainesville, Fla.-based Grooveshark has previously raised under $5 million in funding and possesses over 30 million active monthly users, based on the company. Check out some additional screenshots of the new radio service embedded below.