Tune into cable ? like pickingup a cable signal with a tv antenna ?
never heard of that, and I cant imagine how it would technically be possible
Or are you just talking about people with tv tuners/softeware ?
I think your asking about the tuner cards / software - this is a card or usb device that has an f-type / coax connector for cable / antenna, and then feeds the signal into the pc. the hardware comes with its own software to let you change chanels and stuff. You cant just get the software, you need the hardware. they cost about 50.00 USD