Ubuntu Guide posted a tip about changing the default applications in Ubuntu 11.10

This is simple tip about how to change default applications (web browser, mail client, video/music player, image viewer) in Ubuntu 11.10 Oneiric. There is no more Preferred Applications in Ubuntu Oneiric. These settings are built into System Info managed by System Settings(Gnome Control Center).

  Change Default Browser, Mail, Music/Movie Player in Ubuntu 11.10