I am running Suse 111. Installed the multimedia package from open suse. Kaffein still cant play MP3s, Banshee plays but only stereo, Amarok does 5.1, but sounds awful over 5% vol (in Amarok). And the best part is, Winamp under wine runs perfectly
I have an Soundblaster Audigy 2ZS (index 0) and HD48x0 (not configured/used)
Start by adding the multimedia codecs and enabling the packman repo. Update your system, configure Amarok to use the Xine backend to help your volume issue and then see if Kaffeine will play your MP3’s.