Does anybody have any RAW video footage from the 7D that I can get my hands on?
Do a search of the forums for raw2cdng when they were developing that they shared some raw files to test the software and posted the download links here.
Hi everybody, i'm new here 
i try to understand why there's no stable version of ML for 7D and why audio doesn't exist.
I install ML today from the link at the begining of this post, do you know if this is the latest nightly build ?
The latest build is always shown first. There is no stable version because that takes time, Money and skilled developers. You can help accelerate progress by testing, providing feedback and donating.
I'm not sure what you mean by audio doesn't exist, so can't help you there.