I attempted to do the radio thing with your skin, but each time I select a radio station, it plays one of my MP3s.
I havent looked at it, but generally when one category executes the wrong information it is because the database of such category isnt linked to the correct database. If you have a radio database make sure this is associated with the radio category OR if you want to use the music category then you may need to add a set database button to switch the associated db within the skin.
Just a thought.