Acrobat Help / Flash Player needed link not working

I'm trying to install the flash player addon for Adobe Reader and the links found on the adobe help page are showing error messages. When I try to download the installer, they say "no file found" and are showing

"Not Found

The requested URL /pub/flashplayer/current/support/install_flash_player_ax.exe was not found on this server."

when the link is opened.  Any advice?  I just need to view an audio file that was embedded in a .pdf.

My computer meets the system requirements, as well.

Thanks.