can I copy a mounted file?

[Desh]

Operating System: XP
Burning Software: Nero, Alcohol
Anti-virus Software: NAV2004
DAEMON Tools Version: 3.47

sorry if this is a dumb question!

I have 10 bin files of CDs I want to put onto 2 DVDs.
I mount the bin file using Daemon and can play the file locally.

But I can't copy or save this file onto the hard drive.

I get error 'cannot copy (filename) the parameter is incorrect'

I normally use isobuster to do this but it failed to open up these bin/cue files.

thanks in advance...