Yeah,it's taken some time - no wonder you're confused.
Originally you posted, asking if Mackie still sells the plugins, which I dont think they do.
So in order to help those that didn't have either OS version 5.1 or the plugins, someone (munkustrap) made a hack that lets people install all those.
Since you mentioned this could be challenging for you to do, another option is to use an image of someone else's system, which has all this installed (in this case mine) - so you're making a copy of my system on yours.
I wrote a step by step guide earlier in this thread - you can find it here:
viewtopic.php?nomobile=1&f=2&t=1912&start=10#p14362Since you are now using a CF card, it's actually a bit easier. You do need to do the imaging procedure on a different computer, that has a CF reader though.