I think I need a Jack device driver and I don't see one available, so I
think I have to write one.  So is there any documentation about how to
write a SoX device driver?

To back up a bit, I think I need a Jack device driver because I want to
take the audio input and record it while also sending it to the output.  I
don't want SoX to modify the  signal going to output.  So something like:

Input ----+---- output
          |
         SoX ---- disk

Put differently:  Tee the input with one going to output and one going to
sox to record to disk.

Anybody have either documentation for how to write the device driver or a
solution for the problem?

Claude

-- 
I like: Like Like - The likeliest place on the web
<http://like-like.xenei.com>
LinkedIn: http://www.linkedin.com/in/claudewarren