Tirabosco,
I haven't gotten around to writting a shell script yet but here is what I did to get sound with amarok on the 770. Following pycages' advice (see previous link), this is what I did on the 770:

sudo gainroot
vi /etc/init.d/esd (use vi or another text editor)

change
DAEMON_OPTS=""
to

DAEMON_OPTS="-tcp -public"
and the line

dsmetool -f "$DAEMON"
to

dsmetool -f "$DAEMON $DAEMON_OPTS"

per pycage "That's it. Reboot the tablet or restart esd and you can SSH into a remote system and redirect esd output to the tablet by setting the ESPEAKER environment variable pointing to the tablet's IP address, e.g."

export ESPEAKER=192.168.22.77

This only works if you can get amarok to play sound on the host device using the esd plugin (xine engine)...which took a while to get working...and still dosen't always work properly (99% reliable)