Detect .flv position/percentage played

Hello all. I’m working with a series of .flv’s loaded into an empty movie clip.

I need to detect the progress of the movie through the main Flash file (and not through the actual .flv/source files for the videos, which I don’t have access to) - is this possible?

I’m hoping there’s a property I can get, via ActionScript, that can point to my shellMovie mc, and figure out how far along in its playing the dynamically-loaded .flv that it contains.

If you can help me, I’ll be happier. Thanks.