Flash photo viewer memory optimization

I have an online photo gallery written in flash. The problem is its use of memory. It uses 5MB of memory for each photo in the slide show and it doesn't release the memory when advancing to the next photo. The memory usage for a gallery of about 40 photos grows to more than 700 MB. I need someone with experience in Flash to optimize the viewer to release the memory as soon as it is no longer needed. You can view my site at photodaniel.com. Click on any of the galleries and watch how the memory usage goes up as each photo is shown. The viewer is a single flash file which needs to be decompiled (it doesn't seem to be encoded since I was able to view the action script and other information using the Sothink SWF decompiler).