The default XMMS Library provided by OpenSUSE 10.1 doesn’t have MP3 capabilities. In other words, you can’t play MP3 files using the default XMMS library installed by OpenSUSE 10.1.
To solve the problem, I installed XMMS Library from http://packman.links2linux.org
Here is the filename :
To install it, just use the following command :
# rpm -Fvh xmms-lib-1.2.10-103.pm.1.i586.rpm
After that command run without errors, you can play MP3 files.