The preview sound track is fine. However, the captured files in the Video Folder have two identical sound tracks, one immediately followed by the other. I have removed one of the audio RCA cables, recorded in mono rather than stereo, set the sound balance to L and to R only but the result is always the same; one sound track immediately following the other. I am downloading old videotapes to my computer via RCA cables hooked up to an RCA/USB cable device.