Audio problems - can't hear it but Audacity can record it

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http://www.linuxquestions.org – I've installed a tv card but I can't hear the sound through my built-in CMedia soundcard when I watch tv with TVTime. The tv card's audio output is externally connected to my soundcard's line in input. In the 'Input' tab of the 'Sound Preferences' dialog, I can see the input level meter moving. Audacity can record the tv sound, and I can hear it when I have the 'pass-through' option enabled, or when I play the recording. I can play media files without a problem, and I can hear the system sounds. But for some reason I can't get the tv sound to go through t (HowTos)