Following error with mandrake 10 when launching amarok

amaroK could not find any sound-engine plugins. It is likely that amaroK is installed under the wrong prefix, please fix your installation using:
cd /path/to/amarok/source-code/
su -c "make uninstall"
./configure --prefix=`kde-config --prefix` && su -c "make install"
More information can be found in the README file. For further assistance join us at #amarok on irc.freenode.net.

I have amarok working now. Well it launches but there is no sound.
I can choose what to use for sound gstreamer, arts or xine but below that it is greyed out. I cant select device to output to. I assume on my system (mandrake 10) I should have /dev/dsp in that field.
So I have some how cocked up the install.

how did you get it working? i\'ve just updated mine from cvs and i\'m getting the same error