I have used Studio 8 for some time now but this past week, while editing a wedding video I encountered a big problem. The audio quits when I am previewing the clips. The video runs fine. I have to quit the program then restart again in order for the sound to start up again but once I start any editing process, especially putting in transitions, the audio quits again. Inspite of this, I tried burning the movie onto a DVD and the sound came out fine except that I want to do more editing on the movie to fine tune it. My OS is Windows XP, CPU is Intel P4, 2.1 Gh speed, RAM is 512 Meg; captured video is in the external firewire hard drive. Can anybody help me?