From Music Hack Day
Hearts.fm is a curated radio station of your favorites from around the web.
Enter your Soundcloud, Last.fm, and Ex.fm usernames and a list of your favorites will populate. You can drag and drop those tracks to reorder them into a playlist, and you can also turn off tracks that you don't want to play on your hearts.fm page.
When you (or anyone you share the link with) go to your hearts.fm page (hearts.fm/username), the playlist will begin playing and an artist image (served from Rovi) will display as the background.
If you want to skip to another track, you can hit the next button.
You can also view the whole playlist by clicking the plus button next to the currently playing track name.
Technologies used: - Soundcloud - Last.fm - Ex.fm - Rovi