Comment 5 for bug 1737668

I think you are misunderstanding the issue here. There is not an error occurring here. The problem is a usability issue. An unsuspecting user who clicks on the iTunes feature will have a dialog pop up and interrupt their use of Mixxx. Perhaps enabling the option to show the iTunes library in the preferences should require locating the iTunes library. Otherwise, if the user does not select a valid iTunes library location, the iTunes feature should not be shown in the library.