Upload user chosen file for the app to access directly

hello all,
i’d like my app to upload a user chosen file from user’s hard drive but i want the flash app to have direct access to the uploaded bitmap rather than saving the file to the server via php.

i’ve seen examples to send the FileReference object to a serverside script for uploading to the server but i just want the flash app to use the bitmap w/o needing to save the file.

is the file data only uploaded by php or during the FileReference.upload()? how to get access to the bitmap data?

help!

TIA,
michael