Where to put crossdomain.xml in 2 server setup?

Where do I put the crossdomain.xml file when I have the program running at:
http://www.somedomain.com/vshare

but the video is on

http://www.anotherdomain.com/video


thanks

Cross-domain policy for Flash movies

You need to add anotherdomain.com to crossdomain.xml

I think the XML file need to be in DocumentRoot of the web site, not in sub folder

http://www.somedomain.com/crossdomain.xml

Thanks, that got it working nicely. I had placed crossdomain.xml on the file server (somedomain.com) and it worked, but was worried having something on that one allowing access to everyone/everything (*). I removed it from anotherdomain.com and put the crossdomain.xml up to the root of the program server (somedomain.com), removed the *, added the anotherdomain.com plus the www version, and everything works.

I guess I still dont know the point of the file since it allows a running process to access a remote server and the remote server has no way to allow or disallow this access. It would seem the file server would need/want to have a file that would tell if a web server was allowed access to its files, not the other way around.

What am I not seeing here?

It is restriction by Flash, not file server. Flash Player will check for crossdomain.xml for security reason.