The author feels that using an iPhone for music is complicated and that streaming services like Spotify aren’t reliable. I wonder if he would feel the same if he used Rdio that I wrote about earlier, and if he had his music offline. Streaming services are a huge convenience and many people find iTunes to be overwhelming and confusing.
HOWTO: Fix the Family Sharing not working: “Redownload Unavailable with This Apple ID” issue with IOS 8 | Five Watt Ramblings @ SourceOpen.com. This is unfortunate. It makes sense why this would occur, but still a surprising oversight.