I am still unable to open the class recordings (.arf documents) that are downloaded on my computer. The NBR player that supports it does not install on my computer. I was told verbally by a Webex support staff that there is a special NBR player that Simplilearn can give me that will bypass any problems that I may have. On the other hand, I read on their support page, in small type, that it is impossible to open an ARF document on a Mac, in which case I am wasting my time trying. Please let us know what the truth is. I would be happy to watch them on the Simplilearn site, without having to download them, if that's what it takes. It might be simpler for everyone if we can do that. Thank you.