Hello, what I want to do is change the MyVids plugin, myvids.php to /videos and the MyDownloads plugin, mydownloads.php to /downloads. The same thing I did to my forums with the Google SEO plugin.
You will need to add a rewrite rule to your .htaccess and edit all of the templates that use all those urls you want to rewrite.
It is not that easy since you have to find out what rules you do need first.
You can google many free tutorials.
Since you must be a subscriber at MyBB-plugins.com, I guess you can ask Pirata Nervo over there and he may have a better answer for you regarding his plugin.
I seem to remember including some rudimentary SEO type stuff when I was working on MyVids. I do know it need rewriting for sure though haha