Do any of you have TV cards in their computers? And if so can you interface with it using a programming language?

I was wondering this because if this is possible then you could create a truly random random number generator (RNG).

Tune the card out of any TV stations so you get white noise and then use a few bytes of the signal as a seed value for whichever random number generator you use.

As you can tell I am too hot to do any work and I'm bored. Just wondered if TV cards can be controlled by 3rd party software.