Here is my problem: I can see the video when I "watch TV" but don't have the audio.

Also, my channels numbers of all off compared to regular TV. Are the two problems related

I use cable "out of the wall" and did a auto installation if this can help.

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Biostar M7VKL, Via chipset
Athlon 1.1Ghz
PVR 250
GeForce MX 4000
Sound Blaster Live! 24-bit
Knoppmyth R5B7

Most likely. Did you try the other frequency sets? At a guess you started out with "us-cable" which given your symptoms would make "us-cable-irc" my next suggestion, and after that "us-cable-hrc". Here's how to get back into mythtv-setup to try this: http://www.knoppmythwiki.org/index.php?page=GettingBackIntoMytTVsetup

I did all this. The best picture setting after trying the different settings is "us-cable-irc".

I am wandering if it is not a problem with my Sound Blaster 24-bit. Is the driver in Knoppmyth R5B7?.
Can someone tell me the command line to check if it is installed? (newbie ) Or something to test if sound is coming out?

Thank you for any help you can give me.

_________________
Biostar M7VKL, Via chipset
Athlon 1.1Ghz
PVR 250
GeForce MX 4000
Sound Blaster Live! 24-bit
Knoppmyth R5B7