Cable Box Digital 5.1 converted to Digital Stereo

Labtec, Thank you for your response. My cable box provides no option.

Having the digital cable from the cable box plugged in to my Dac gives me a static signal.
I guess you would say my cable box outputs Bitstream that requires it to be decoded into a PCM signal.

So far, I have not found any type of add on decoders.

Kr4, Thanks for your comments.
The HDMI signal is going to my TV.

More info:
I own a Tascam DA-300 recorder. With this recorder, I could record hours of uninterrupted music then edit what I would like to keep to an external hardrive.

So, I guess my question now becomes is there any way to convert the Dolby digital to stereo PCM?

Thanks, I will try the optical output. However, my Dac or the Tascam recorder does not have an optical input. But, I do have an optical converter to RCA coaxial.
I'll give it try this weekend.

Thanks Dtc, for your info and help. I'll give it all a try this weekend.

Well guys, I tried the optical out from my Cable and the Denon Receiver and then through a converter to a RCA Coaxial and still I'm getting the static(Bitstream).
I guess I could try the TV optical out, but then I would have to have my 85" 4K Samsung on when I just want to play the music channels.
Oh well, I guess its just not worth the trouble.

Yeah, I can use the Cable analog outputs, but I thought with a digital output through my Dac I could obtain better sound.
I'll check with Comcast about the Xfinity one box. However, past experience tells me that will be a hassle getting through to someone that's knowledgable.

8snaces, Thanks, I believe I have already tried it and there was no change. But, I'll try it again. Thanks.