The Banshee team announced the release of version 2.5 a few days ago. The new version now support better integration with Last.FM, and online social network for music lovers. Music that you listen to in Banshee will automatically get updated to your Last.FM profile.
However, this release is not yet available in the Ubuntu repos however if you are one of those who can't wait to use this new release, you can add a personal package archive and install the new Banshee version from there.
To do this, open terminal and type these commands:
sudo add-apt-repository ppa:banshee-team/ppa
sudo apt-get update
sudo apt-get install banshee
These commands will also work on other Ubuntu based distros like Linux Mint, Xubuntu, Kubuntu, Lubuntu etc.