Lesson, people: whether its Tuner, Pandora, whatever...do NOT just automatically update your apps when an update pops up in your queue. Wait, read, absorb. Most updates on radio apps will compromise the features youre already enjoying; and theres no turning back once its done.
That said, if youre going to update your app (for the first time in ages), and its functionality hinges on which OS youre on, say so. There are reasons why some users refrain from updating...its YOUR responsibility to let us know.
Figure out a way for users to restore the app to its previous version.
Ramblin1 about Tuner Internet Radio