Has anyone had this problem yet?
I just installed Mojave this past weekend.
In previous macOS systems, I could open Finder and if there were audio files in there, I could just press the space bar to start listening to it for a bit.
In Mojave, this no longer works anymore. I press the space bar and nothing happens.
I was just reading … somewhere… that QuickLook plugins in Mojave are operating under new restrictions that are apparently not documented very well (just like most of Mojave’s new ““features”” it seems).
Those restrictions basically make it much more likely that QuickLook plugins are going to get killed off.
(My decision to stick with High Sierra seems wiser every day.)