How to write binary file from Flash web player?
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Can I write binary file from Flash web player? If so how? 

I know that in theory you're not allowed to do that, but that's something we're doing for tests on local machine, so I'll be able to add it to trusted locations.

I know there are these solutions:

 - Sending stuff to a localhost server - sound like an overcomplication in my case
 - Using FileReference - doesn't work because I need a lot of file (like thousands)
 - File+FileStream seem to be specific to AIR

Is there another solution?