I get the source code from git clone as well. There is no spec file except for the one I make myself. I build rpm packages for pianobar.
pianobar-2012.04.24-6.fc16.i686.rpm
pianobar-2012.04.24-6.fc16.x86_64.rpm
These can be gotten
here.
Currently, except for the "config-example" file, I'm not packaging any of the files in the "contrib" folder.