Hello man and welcome here!
I suggest that you start all over again your SUSE Linux 10.1 installation, because it seems that you messed it up with unnecessary compilations.
You have to learn how to install packages in the SUSE distribution because it is a rpm base distribution.
YaST is the appropriate tool to use.
There already exists a banshee-plugins rpm file on the installation DVD 1
Do learn how to use YaST as a package manager, read the SUSE documentations. And search for howtos in the forums. It will be a much better path to follow for you.
Don't begin compiling things, it's not the right way especially with a distribution like SUSE.
I hope you a good start in your Linux travel.