It is said that there's an Audio recording of the F4 demo at the 'Quake Con' but until now I haven't found it or a link guiding to it. Can someone pls direct me where I can find it?

Non-legit sources can't be linked on here. It would be shut down pretty much straight away.

Its against forum rules to link such a ilegal material, there is a reason it gets taken of the net all the time, just sit down, chill and wait for the official video.

Yup.