Unfortunately, you can't make a normal group clip with FCP 7 when the camera starts and stops like this. FCX addressed this issue and it works great. But FCP 7...nope. The best you can do is make a sequence with the footage staggered and the audio continuous. And use that sequence to edit. MAKE SURE that you map OVERWRITE WITH SEQUENCE CONTENT mapped to a key, or press OPT when you press the red OVERWRITE arrow. This will bring the clips from the other sequence over. If you don't, it'll nest everything and that is bad.