Cant dectect any files at all (mac user) really need help

I got a mac and I just downloaded serviio and I found my TV ip thingy and then I went to the libary and clicked "add local" and tried to find my movie I was going to watch , but I can see my movies but I cant click on them, I cant select any movies nor music. Have I missed something or what?

[DenyAll]

Add local adds the whole folder, not individual files.

Add a folder... then sit back as all media files in that folder, and all subfolders, are added to Serviio. May take a while initially to add all files, as the library is built - go to Library tab, Force Refresh and then Show Status to see files being added. Two red lights means its finished. Use MediaBrowser to confirm the files are added.