Any way to disable part of the AC3 stream in DTV

[hikinandbikin]

I recently got an HVR1250 which is working great. However, I record Bob the Builder for my son off PBS. Apparently they have embedded a voice over as one of the AC3 channels I don't know how to determine which channel. Is there any way to control which parts of the audio gets recorded. I would like to record (really just be able to playback) just the normal audio.
Thanks if anyone knows how to solve my problem.
Wyatt

[sub]

What do you have you BDA Multiplexer setting set to?

[hikinandbikin]

I am using cyberlink mux. I use cyberlink so it can be played back conveniently on my MVP in the other room.
I have the reuse MDAPI filter boxed checked. I think it was checked by default.

[sub]

Sorry, I'm not really sure then. I was thinking of a possible cause if you'd been using the TS Mux option, but thats not relevent to the Cyberlink mux.

[hikinandbikin]

Is there any way to control how the sound records perhaps I could change a setting in AC3filter.

[sub]

I'm not aware of anything that would help with this.