I use the RDIO app on my mac that Indigo is on. It support scripting.
I have done some simple ones, my question is would some body be willing to make it more robust or a plugin??
I would be wiling to pay a small fee through paypal or something
I have stop and play but it has more power like playlist and whats song is playing etc
Here is a link
http://developer.rdio.com/docs/read/Desktop