VideoStudio :: Combining Multiple Video Sources (transitions)

I have two videos of the same event that I would like to switch between. There is audio to sync to the video as well.

What I wanted to do was:
1) Put the main video in the main video track
2) Put the audio in the music track and aling with the main video
3) Put the secondary video in the overlay track. Align it with the audio and set the overlay to cover the entire screen.
4) Cut out most of the overlay video (spit the clip into sections and delete most of them).

That worked as far as it went -- the main video shows, interspersed with the secondary video, and everything is aligned with the audio. The problem is that the change between video perspectives is quite aburpt, but I cannot figure out how to make the transitions be seamless.

I added transitions to the beginning and end of each small clip on the overlay panel, but that didn't really make things seamless, particularly at the end of the clip -- there isn't anything to cross cut to, and if it fades to black then the main video pops up immediately when the overlay clip ends.

I tried splitting the video in the main track at the spot where the overlay comes in and adding a transition to the end of it; no matter what i try with the ripple settings, that throws the audio out of sync when the overlay is finished. I also tried deleting that section in the video track and moving the video from the overlay track into the video track; that was difficult enough to make sure that the sections were exactly the same length, but then I still have the problem with the transition lengthening the clip and throwing off the audio. I guess I could somehow figure out how to trim exactly the right amount of time from the clip I am inserting to solve that problem. Really, I guess I'd have to do that twice -- once for each transition -- because if otherwise the audio would be off in the clip being inserted. So I need to trim 1 second (or whatever) from the beginning; split it somewhere, and then trim 1 second from the end.