Anything over 20 minutes (or 4 GB) you have to use the utility to join the clips otherwise there is a gap. I use the utility to download the whole card because it's easier. You do not have to use the utility on the smaller clips. You can drag the rest of your clips directly on to your hard drive if that's what you prefer.

I use this utility as well to join large files. I was just a little unclear with your last previous post when you stated you used the utility to join M2Ts from your camera - wasn't sure if you meant you could join all M2Ts together, or just the +4GB files.

Regarding my original post on 5/5/10, I've done a ton of research and the issue I'm having with M2Ts and Premiere (7 silent frames and one black frame at end of each M2T) has led back to a bug with Premiere Pro and M2T files. If you change the .M2T extension to .MPG, the black frame goes away, but the sound issue still remains.

I'm anxiously awaiting to see if CS5 has fixed this bug, as it is quite annoying when watching all the footage uncut.