Amarok/GettingStarted/Download/Opensuse
Available Amarok packages for different openSUSE versions can be searched for at software.opensuse.org
Phonon Backends
See openSUSE's audio troubleshooting guide and the http://community.kde.org/Phonon page.
MP3 Playback
For MP3 playback see the page on Multimedia in openSUSE.