Music licensing company Rumblefish has just made it easier for professional and amateur content creators to add music to their work legally by opening its API to developers and partners.

Rumblefish announced Tuesday that it has licensed 4 million songs in user-generated videos, slideshows, presentations and games.

Now, for example, an app that allows users to make home movies and post them to social networks can also give folks the option to license music for the videos for a fee. Users can browse playlists, receive soundtrack recommendations and search for and filter music via attributes (mood, instrument, tempo, etc.).

API partners will qualify for a share of the revenue garnered from licensing as well, but Rumblefish could not provide us with an exact percentage partners will earn. It will depend on the product.

The company launched a similar service called Friendly Music last year to facilitate finding licensed music for YouTube videos.

Rumblefish already made its API available to a select group of partners at the beginning of 2011, including social moviemaking app HighlightCam, fitness provider Journey Gym and online video editing service Clipik. Now, all interested parties can apply to access the API — for free.

The announcement comes on the heels of similar news from licensing company, Audiosocket, which released its Music As A Service product earlier this month.

Image courtesy of Flickr, all that improbable blue

More About: audiosocket, Clipik, friendly music, HighlightCam, Journey Gym, rumblefish

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