In the usual instruments list.
It’s this
http://www.sknote.it/download.htm
the Grainz one, at the top. Was looking forward to this but I’ve downloaded both links, put the dll files in and nothing comes up! 
the plugin gets referenced into CachedFailedVSTs.db (with CausesCrash flag set to 0), that’s why Renoise does not load it.
it’s quite old stuff (latest release date on 2006) so it’s probably been discontinued
i never could get this thing to work in renoise
I did, but it was two or three years ago. There was some sort of installation issue for the first time tho.