Does anyone know how to stream from Open Media Player on the N900 to a Linux PC running pulseaudio (with pulseaudio networking enabled on the PC)?

I have read various tutorials and set up the N900 and PC as per this guide, but I can't seem to get OMP to use pulseaudio network transparency.

I have tried running OMP from an Xterm on the N900 with PULSE_SERVER=x.x.x.x:y (matching the IP and port the pulse daemon on my PC is listening on), but OMP just plays via the speakers.

I also tried adding a tunnel sink per the above guide, but when I try to use pacmd on the N900 (either as user or root) it tells me:

Can anyone help?