Grooveshark is a free platform for the discovery and promotion of music, the sharing of information and comments about music, communication with other Users, the posting, syndication of, linking to or uploading of User Content, social networking and other features, functions, or services on the Site. The Service will include the cataloging, indexing, sharing and streaming of User Content.
Nearly all of the music on Grooveshark has been uploaded by users. You can upload any MP3s you have on your computer. After uploading and some processing time, you will be able to access your music library on Grooveshark anywhere in the world, so long as you have a computer or smartphone with an internet connection. After uploading you can listen and share it with friends all over the world with the click of a button