Hi, Britta. Thanks for helping out with the site (it hasn't got much attention until the last few days/weeks). They are classes in the MediaPlayer.framework and they are the classes that present the user with the Airplay controls (list normally consisting of "iPhone" and "Apple TV" with the "Mirroring" toggle underneath). They don't really link to much because that's their only use.
I guess if the SBAppSwitcher-Controller/View have a page it could be mentioned that when they present the Airplay controls to the user that they are those controls. iKy1e (talk) 22:20, 28 August 2013 (GMT)
Hi iKy1e! I was looking for "orphaned" articles (like Special:LonelyPages), and I noticed that MPAudioVideoRoutingTableViewController, MPAudioVideoRoutingPopoverController, and MPAudioVideoRoutingViewController only link to each other and aren't linked from other pages in the wiki, and I tried to figure out where to add some links (so people can easily find the info you helpfully contributed), but I don't know enough to find the right place. I imagine you do though... Britta (talk) 13:41, 28 August 2013 (PDT)