Is Flash possible in Gallery v1.4.3-RC3 ?

I have been searching out here to see if Flash can be used in Gallery v1.4.3-RC3. I have seen posts on some hacks with earlier versions, but wasn't sure if I was just doing something wrong trying to upload a flash file. I have tried to upload a .swf as well as trying a QuickTime movie but have had no luck...

Thanks,

dondo521