iLike built a social playlist gadget for sites using Google Friend Connect, that lets your visitors listen to songs on the playlist, and if they sign in using Friend Connect, they can add their own favorites to the list.

If you run Friend Connect on your website, you can add the gadget by sign in at www.google.com/friendconnect, click "Social Gadgets," and you'll find the iLike "Playlist gadget" in the gallery. Select the "Playlist gadget," and Friend Connect will automatically generate a snippet of code for you to copy-and-paste into your website's HTML. You can also add the "Wall gadget"—music can be a great conversation starter!