Are you a Last.fm fans?Do you listen Last.fm in linux? There are many music players supports Last.fm like Amarok,Rhythmbox,Audacious ..etc.But I don't recommend you to use those players to listen last.fm,as their function for last.fm is limit.I recommend last.fm 's official player or Vagalume.
last.fm have their player for linux with full functions.
sudo apt-get install lastfm (for apt-get based linux like Ubuntu,Debian)
yum install lastfm ( for yum based linux like Fedora,Mandriva)
If your sources don't contains the last.fm player,you may also download it from :http://www.last.fm/download/?setlang=en
2. Vagalume (recommended)
Vagalume is a light weight last.fm client but with full features,it is based on gtk,so it is very suitable for Gnome environment .Vagalume is dapper，it definitely can replace the official one.In addition, it is specially designed to work in the Maemo platform, the one used by some Nokia devices such as the 770, N800 and N810.
sudo apt-get install vagalume (for apt-get based linux like Ubuntu,Debian)
yum install vagalume ( for yum based linux like Fedora,Mandriva)
yaourt -S vagalume ( for Archlinux)
Alternate,you may download Vagalume 's deb/ rpm package from http://vagalume.igalia.com/