Just installed Ubuntu 11.10 yesterday (Feb19) and I have noticed that Banshee will not play MP3's at all.
The Ubuntu Restricted file will not install either…..something about not being in my software sources. A few people have recommended this file to me, however, it's not available to install.
Seems to me that it shouldn't be this difficult to get MP3's working in this age!
Best Answer
I think not all of your software sources are activated. The software is organized in different sources, which are 'main', 'universe', 'restricted' and 'multiverse'. Main contains open source software, supported by Canonical. The software in universe is maintained by the community. Restricted contains proprietary drivers and in multiverse is software which is restricted by copyright or legal issues.
It seems, that some of this sources are not activated. To do so, go to 'System Settings' -> 'Software Sources'. In the tab 'Ubuntu Software', check all boxes, except 'Source Code' and Cdrom.
Then you have to install the packages gstreamer0.10-fluendo-mp3 and*gstreamer0.10-plugins-ugly* in Ubuntu Software Center