Audiotap has been my go to app for dealing with a music collection that far exceeds the capacity of any iPhone or iPod available. The recent iTunes 12.2 update seems to have broken the server side (Mediatap) and Artists and Albums no longer show up. There is a work around but it is less than ideal. In MediaTaps preferences you can add your iTunes music folder as a shared folder. Then, you can access this under the "More" section of AudioTap. It will get you access to your music again but there are some annoyances- like artists whose name begin with "the" getting alphabetized in the Ts. Two emails to the company and no responses. I will gladly give them a higher rating when they fix the server app.