Even though MPEG Audio Layer 3 (MP3) is an ISO standard it is not a free and open standard and is covered by numerous patents (http://www.mp3licensing.com/patents/index.html
). It is not legal to distribute unlicensed MP3 Decoders and Encoders in most countries.
In the case of RealPlayer for Linux (http://www.real.com/linux
), Real Networks pays for the license and gives it away for free. Novell does not do this with SUSE Linux OSS, and therefore MP3 support is not included.
However, if you would like to play MP3s on SUSE, you can install a Multimedia Pack from the YaST Online Update Servers.
Also: YaST angeschmissen und Multimedia Pack installiert.