I'm becoming more and more frustrated with this annoying message.

I've been using Spotify for months, and for me it is the perfect solution for my music. I have a Premium subscription.

However, it's getting beyond annoying that I get songs in my playlist and now I just magically cannot play them. "Unable to play track" has been going on for long enough. One song will work on my computer, but will be "unable to play track" on my iPhone 5 (iOS 8). Or it'll work on my phone, but not computer. Attached is the error message on my computer, it's basically the same on my phone except a popup.

Songs are from two methods: Spotify's own library (why you guys have it, then give me this message is beyond me), or downloading the track/owning it on my computer and syncing it to Spotify.

I really would like the answer to this annoying problem.

Also, my versions since this seems to be a requirement:

Computer: Spotify 0.9.4.185.g7545a404

iPhone 5: Spotify 0.8.0.57