Dear Rony,
Suse Linux does not contain support for mp3, copyrighted dvds, etc. If you want full functionality, then go the packman site (http://packman.links2linux.org) and download xine-libs from there and install/upgrade it. Since xine-libs is already installed on your system, you will have to choose the upgrade option with the rpm command i.e. rpm -U. That's it. You could use YAST, but YAST on Suse 10.1 is broken. Updates are available, but if you are not that fond of YAST, then I suggest using another package manager called "smart". Check out at http://labix.org/smart. There are instructions elsewhere to perfectly setup smart for Suse 10.1. A bit of searching would be enough.
After upgrading, all your files will open/work as with other media players. Now you can use any front end like xine, kaffeine, etc. to play your media files. You should also install libdvdcss (http://download.videolan.org/pub/libdvdcss/) to view copyrighted/encrypted DVDs. More information on http://developers.videolan.org/libdvdcss/
Tip: To find extra/other packages for Suse you should visit http://linux01.gwdg.de/~pbleser/ (Guru's RPM site), it is dedicated to Suse Linux. And of course packman.
HTH, Rajen.