title: How can I skip compressing one PNG?
body: <p><em>(Note: I have solved this problem, but it took long enough that I'm posting question/answer here.)</em></p>
  
  <p>The Xcode build process "optimizes" my PNGs when building. This isn't usually a problem, but iTunesArtwork being processed in this way causes corrupts it so that iTunes not to be able to show it. How can I prevent this?</p>