Can't really help with your sound problem without some details but you imply you've got the solution.
The wireless adapter is on the way (I have internet, but no wifi adapter on this computer I just bought; I will have internet soon). I've researched the apparent fix, but I wanted to fix this common problem (per web) without internet to see if I could (a mixture of impatience and alarm as to why it wasn't working in the first place). I know everything is not plug and play like Windows, so I wanted to manually fix it. Seems to be impossible, which is strange. I have sound, but like most people who used HDMI experienced no audio with their TV. And I bought this system specifically to hook up to my TV. I am going to put Windows on this system eventually (and I don't think the HDMI audio issue will be a problem with Windows), but in trying to solve this problem I am finding that I cannot do anything w/ this OS without a direct
internet connection. So if my initial post had a sour tone, it was just due to hours of research and failed attempts only to find that I can't download a solution that works just yet.