Not sure if this is new - but I have not seen it done this way before:

We have just made it a lot easier to get the Teen Buzz ringtones on to your iPhone - assuming you have iTunes that is! Simply subscribe here and you will find the ringtones showing up as a podcast - once the ringtones have been downloaded they are automatically added to your ringtones directory and available on your iphone next time you sync your phone with iTunes.
More over at