Serviio 1.7 - Plugin folder mac

Dear all, I'm new, I tried to solve and read solutions in the forum but no avail. I installed serviio 1.7 on my mac, but I really don't understand where I must place the groovy files, I have read that the location in Mac is inside Serviio.app. Right-click on Serviio(.app) icon -> Browse contents -> naviagate to Contents/Resources/Java/plugins , but inside Resources I don't have or see /java/plugins

Thanks

[zip]

They are under the server installation directory: http://serviio.org/component/content/article?id=21#q18