Vst Files

I just purchased this, and I’m used to using VSTs on a Windows computer. .dll files.
What type of files do I use on a mac in Renoise?

P.S. - Sorry, I know I’m asking a lot of questions lately.

Audio Unit plug’s

Yes, yes, thank you, but…

Do I set it up like I would a VST. What I’m doing right now Is going to preferences then miscelaneous and setting the default VST folder to Audio/Plugins/COMPONENTS, then putting the part of the free AU package entitled -----.component in there. But when I scan I get nothing. Could someone tell me what I’m doing wrong?