Presetting volume of Last-FM and jamendo streams.

[butty]

Hi, auto DJ's streaming of  Last-FM/jamendo is very nice.
However, those streams sound a little bit loud than ordinary tracks for me (note: the track gain is enabled). So, it would be useful if we could preset the volume of those streams like ordinary sound files.

By the way, is the dynamically normalize the volume of streams feature (Preferences/Player/Sound effect) for this purpose? If so, I think it does not work well...