1. Add radio stations to rhythmbox
2. Maybe one of them crashes it
3. Reload rhythmbox
4. All previously added stations are lost

Rhythmbox should save the list of radio stations (and maybe other stuff if
relevant) after every change. It isn't that speed critical that it would affect
the user.

At the moment it only seems to save on exit and there isn't even a menu option
to force it to save. I don't think we really want the latter, so it should save
all the time.

Twice now I've lost a whole load of added radio stations and this time I'm
giving up on it (for now) - which is a shame because rhythmbox is a nice program.

You might say "it shouldn't crash" - true but it does, always will, and
certainly shouldn't loose entered information in this case.