I also have bad audio, it seems to be an echo, the first sound is 'live' the 2nd in synch with video. put volume to zero & clean 'live' sound but video is 10 seconds late.
What are the alternative programmes?
I only get popping sounds with VLC media player I have tried all possible combinations of input & even removed the Easycap USB adaptor with no effect. My system works fine with Honestech & other programmes. Audio input selector is greyed out.