In case anyone was planning on replying to this query ...

  ldn> ... [getting sound to run from my XP guest under
  ldn> VMware] ...

I've solved the problem.

Remarkably, the answer is actually covered in the
manual. :-)

All I had to do was go through the Add New Hardware
sequence and select the right device on the XP side,
and now sound works fine from the XP virtual machine.

-- 
Lynn David Newton
Phoenix, AZ