I'm thinking on how to use my laptop running Ubuntu (with its loudspeakers) as "headset" for my Android mobile. For instance: I listen to some music on my mobile and I want to connect my laptop as a headset! Is sounds weird maybe but I guess somebody came up with the same idea! Obviously it deals with bluetooth, how can I display and in case modify the bluetooth services available on ubuntu?
You could (as alternative) use your Laptop to listen to music and your mobile to control your music program over your mobile with remuco http://code.google.com/p/remuco/