I found this site that is similar to Jango. Here's a good description of it:
"Pandora radio is a great website where you can create your very own internet radio station. You type your favorite songs and artists into your radio station. Pandora will then search its databanks and start playing other songs which are similar to the ones you typed in.
You can choose whether or not you like the new songs, and Pandora will use your new choices to narrow down the search even more. This is a great way to sample new music and broaden your tastes.
You can make several different stations, you can have one to listen to while you are working and another for when you want to party!"
Pay attention to the open sky
You never know what will be coming down