Need help installing linux-c6-flashplugin11

I cannot even seem to find a valid port.

I am using FreeBSD 10.3 AMD64. I am using Firefix 50.0.2.

Could somebody walk me through this?
Forget about flash, you're not gonna get an app per se as in Linux/Windows.
Get the extension HTML5 from Firefox. Click on it and get a list, I chose: YouTube ALL HTML5
restart Firefox or reboot and try it on Youtube.

Firefox > Extensions > HTML5 > YouTubeAll HTML5