Two Android apps are now available at the Android Marketplace.
They allow you to browse, choose and download ringtones, and set them as your default.
The Mobile Sinfonia app will send location and ringtone data to the website each time your phone rings, the reason for this being that Mobile Sinfonia would like to display (and ultimately play) each instance of one of its notes being played on the map. Data will not be used in another way. The Mobile Sinfonia Basic app has the same functionality but does not send any location data.