I like to work hearing music, especially classic music. I also like Radio Clásica, the classical music radio of the Spanish public radio. In rhythmbox it is easy to enter a new radio, just entering the URL of the radio stream in the "Properties" field of the radio.

The problem is 1) that some radios like Radio Clasica change this URL often, 2) increasingly the web pages of the radios where the stream is included use javascript and the stream url cannot be seen directly in the html source of the page.