I'm not sure exactly what happened, but now everything seems to be working perfectly. It took a few restarts, so I am assuming I may have been running gmusicbrowser again before the previous instance had time to completely shut down, or perhaps there was some residual issues from my repo install of the earlier gmusicbrowser release and my current install, which is from the RPM on this site.
Either way, it works, and I completely wasted your time from implementing the billions of features people have requested ;)
Either way, it works, and I completely wasted your time from implementing the billions of features people have requested ;)