Radio 8, huh? I could've sworn the last version was Radio 1.0. :)
To be honest, I never quite groked Radio 7. The interface for 8 is much simpler to use, and the addition of free hosting is really outstanding. It's too bad the URL's aren't a bit more meaningful and easy to type, but small things.
This is actually the second time I've installed Radio 8. The first time, I uninstalled 7 and installed 8 over it. It didn't seem to like that; the RSS feed would update, but not index.html. Here's hoping this works a bit better.