I discovered a nice little trick for GNOME users running GStreamer apps. You can play sound across the net from any GST app, like so:
gstreamer-preferences, and set the sound output to the “Custom” option. Put in the text entry underneath
esdsink host=18.104.22.168 where 22.214.171.124 is the IP address of where you want the sound to go.
On the destination host, make sure ESD is running with the options