I'm a freelancer and I have a client that want an application and I want to use the AIR framework for it. However I'm not sure that I have the legal rights to do that just using the free AIR framework. So do I have to buy a commerical license or something like that to do that ?
You are fine to sell whatever you have made using the SDK. The only things you have to pay license fees for, is if you buy the IDE.
Also, for the future, Adobe employees aren't allowed to answer questions like these (I suspect an overeager legal department!)
Thank you for the information!