Pipeline stall
We probably need a better title, and a issue move, but meanwhile we have this pipeline stall. This should in theory be a simple non-live mix, but does not get passed preroll.
gst-launch-1.0 audiomixer name=mix ! audioconvert ! autoaudiosink \
uridecodebin uri=http://stream.p-node.org/billiejean.mp3 ! audioconvert ! queue ! mix. \
uridecodebin uri=http://stream.p-node.org/billiejean.mp3 ! audioconvert ! queue ! mix. \
uridecodebin uri=http://stream.p-node.org/billiejean.mp3 ! audioconvert ! queue ! mix.