Capture bktr using Transcode, audio problem.

[Rod Person]

I've got transcode to use my TV card. But, the capture does not have audio.
I don't know what I'm missing. Here is may setup:

I have a WinTV toGo card with audio connected to the line in on my audio card
(sound blaster audigy). Everything works great with fxtv.

Here is the transcode line that successfully captures the video but no audio:

transcode -i /dev/bktr0 -x bktr=norm=ntsc:vsource=tuner:asource=tuner,null \
-g 640x480 -y ffmpeg -F mpeg4 -o out


I've tried external and line as the asource neither work. I've tried to 
remover the
,null part from the asource and then the script errors.

any suggests?

Rod