The current version of the Last.FM player is rather old. Version 2.1.30 is the current release.
The build has actually changed quite a bit it seems. The current ebuild cannot handle the new version.
I don't have a lastfm account anymore so I can't invest much time to bump this. Contributions are welcomed
I have no interest in this package anymore. If anyone wants it please contact
+*lastfm-desktop-2.1.35 (14 Aug 2013)
+ 14 Aug 2013; Justin Lecher <email@example.com> +lastfm-desktop-2.1.35.ebuild,
+ New version of the lastfm player, #453566