Location of last.fm/audioscrobbler credentials

Hi all

I'm writing a rhythmbox plugin that updates a track's playcount from
last.fm. The current code can be found at [1], and is completely
functional. However, as you can see, the username is still hardcoded in
there.

I was wondering if there is some kind of gconf/dconf key that stores the
user's last.fm username or, in case there is none, where this
information is stored. iirc, previous versions of rhythmbox stored the
user's last.fm username in a gconf key, but v3 seems to only store other
configuration options (in dconf).

Thanks for your help.

Best regards
Bram

[1] https://github.com/BramBonne/LastfmPlaycount