Restricting File Access

I am using Content Access to restrict access to specific nodes on my site. Is there a way to restrict access to specific files that reside on the web server? For example I would like to restrict access to www.example.com/SampleFlashFile.flv in the same way that I restrict access to www.example.com/node/X

I've tried "wrapping the file" in a node but I need to be able to access the file directly by name to be properly loaded into my flash player. If I try passing the flash player www.example.com/node/X , it fails to load the flash file. Any ideas???