Or you could just load the xmms-lib-mad libraries. Grab them, along with the MAD package at
http://rpm.pbone.net.
SuSE doesn't include them as OSS packages, due to some (stupid, IMHO), things, surrounding the MP3 format. OGG and any other open-source-format files will play fine, out of the box. If you buy the SuSE disto from them, MP3 libs are included. They do this, so they're not held liable if anyone gets their knickers in an knot, and tries to sue...they don't distribute them, but sure don't make it hard to GET them, either.
Should take less than 5 minutes to download and install the libs...then you'll be up and running. Enjoy