From last.fm integration, fetching album/artist, etc information via internet to purchasing mp3 files directly from Amazon + syncing your music between Android or iPhone, etc... this is a pretty darn good music player nonetheless.
By using the official PPA channel, we can easily install Banshee in Ubuntu (should also work for 10.10/10.04 ... besides the 11.04 as well).
So, open your Terminal and enter the below command.
sudo add-apt-repository ppa:banshee-team/ppa
sudo apt-get update
sudo apt-get install banshee banshee-community-extensions