So the first try at a GStreamer base Songbird led to spectacular crashes when starting to play a song. Checking the crash logs, it looks like it was a library mismatch. This is a hazard with MacPorts installed. MacPorts has a way of adding an extra set of libraries for everything and creating all sorts of mischief for an app to be linked to two conflicting versions of the same software library. ick
Finished a second attempt this afternoon. This build didn't crash. On the other hand the qtwrapper plugin only produced static when playing mp3s. The version played ...