Press Release: Crystal clear HDTV broadcasts can be enjoyed on the PC with the new HDTV WONDER™ announced today by ATI Technologies Inc. North American customers will be able to tune in and watch high-definition television (HDTV) programs on the PC without having to purchase an expensive TV that could cost more than $2,000. HDTV in North America offers up to 5.5 times the pixels as standard TV resolution resulting in amazing picture quality.

In addition to supporting analog NTSC cable, the HDTV WONDER add-in video card allows consumers to experience the new ATSC digital, free-to-air HDTV broadcasts without having to subscribe to cable or satellite subscription services. HDTV WONDER offers the best advanced personal video recorder (PVR) on the PC (...)

But the important thing is if you have the software in order to make a copy of the broadcast in HDTV will the sound be stereo or 5.1 or better?
Have seen lots of TV tuner cards that supposedly do HDTV and yet sound was always stereo.