Nero Vision Express 3 unable to capture audio

I have been using this version for a year to capture video from my Sony Handycam DVR-TRV 38 and making dvd’s from my home movies with no problems until now. One day it works fine, the next- no audio. It plays fine in the camcorder and hooked up to the TV. The video comes in fine and when I click on the sound icon in the nero program, the box pops up show a type of audio spectrum analyzer as getting the audio. I have re-installed the USB driver and Nero with no change. All other audio is fine (CD, DVD, etc.) E-mailing the manufacturer was no help.
Any ideas? Thanks for any replies in advance.