This short tutorial will explain how to setting ChrisTV Software Sound for PixelView PlayTV 400 USB
If you have PixelView PlayTV 400 USB TV Tuner, but you can't hear the sound when using ChrisTV software, just follow this simple steps:
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After that, in volume control panel (playback) unmute all but microphone inputs and set the volume cursors at half; it should work! If you still have the problem with your sound, try to replace ChrisTV.ini file in C:Programm File ChrisTV Lite (in windows XP) with THIS FILE .Still not work ? then you might want to visit ChrisTV forum at http://forum.chris-tv.com
Source: Setting ChrisTV Software Sound for PixelView PlayTV 400 USB