A friendly bump to resolve this issue.
If this will help any, besides the main site (site.com), the second site (sub.site.com) contains my phpBB forum. Could it not be working due to the fact that the sub site is .php based?
I've been searching high and low, only to receive thousands of tutorials referring to only one site on one account. I have in my directory:
And I wish to prevent hotlinking on the first two, somehow using the one htaccess file. If there is an alternative way to disallow hotlinking to the sub, I'm open for suggestions (if within reason of my knowledge and easibility).