Check the audio tracks on your original with your DVD plaayer and see if there are any differencies between them (your DVD-player remote has an audio button to switch tracks). DVD-Shrink should just copy the tracks you select and you can deselect unwanted tracks if you want less video compression. But it is up to you to decide what you want to keep (maybe some fake or lower quality tracks were added to make it harder to copy). Normally I keep only the original language 5.1 audio track (my player doesn't need any 2.0 tracks) and the subtitle of my native language (in my case Swedish).