I just tried that Downloads.cnet.com link and it worked for me.
I currently have a file waiting to be downloaded called avg_free_stb_all_9_39_cnet.exe . All I have to do is click "Save file".
May I ask, which browser are you using? Can you try another browser?
Do you know what an OLED TV is?
CNET explains how OLED technology differs from regular TVs, and what you need to know to make the right shopping decision.