Create a website like StumbleUpon! but only for songs
You select your favorite type of songs, (i.e. Romantic, Classic, Rock, Pop). Then you stumble!, a random song from your favorite type (English or Arabic or Spanish etc.) will be directly played at your browser. This way you can listen to new favorite songs all the time.
There will be a link to download the song. There will also be a feature to Auto-Stumble (get me the next song after this song finishes).
You may upload songs from your machine or from a link. Don't worry your name will appear (uploaded by you) so people will see that you have added this. And then connect with you share things with you add you in facebook!
I think this will really connect people together.