How do I choose what part of my track to use for previews?

This is completely up to you! If your song contains vocals, we recommend choosing a section of your songs with vocals, but otherwise we recommend you pick the 30 second section of your song that you believe will give you the best opportunity to hear the remastering effects. If you exit Dolby® Remastering after generating previews, your original preview will still be there on reentry.