LIST SERVER ISSUE

I was using a server to serve up my video files, but now want to stop using it, and just have the flv files stream from my website. The script does not allow you to do this (without just reuploading) -- I don't want to as my suers to do that -- and I can't reupload for them.

Can someone tell me if this will work:
My secondary server plays vides from a ur liek this: http://secondserver.domainname.com/1234.flv

If I point that sub-domain to my main domain... and copy the flv file without changing the name.. will the script know where to get the file from??