You can get it from the thread. I am using Firefox.

Step 01. Right click the broken image icon. Select 'View Image'

Step 02. You should get the material file open as a text.

Step 03. Select all, ctrl-c, open Notepad or equivalent and ctrl-v. Save the file as "Foam.mt5"

Step 04. Place the newly saved foam.mt5 into the materials library and then you can load it.

I did these steps myself to verify they worked. Hope that helps.