I'm currently using the Mac Spotify app, running on OS X 10.9.5. I am a premium user with the family plan.
Today, after discovering all of my offline content disappeared from my Mac, and that none of the playlists I had marked for download were marked for download any longer in the Mac Spotify app, I went ahead and marked them all for download again. Then, after everything showed that it was finished downloading in the app, I checked the folder that I had set in the preferences for offline songs storage. It was the same size as before I downloaded everything again - only 5.5MB.
Apparently, the Spotify app is lying, and I can't actually manage where Spotify downloads offline content, despite the fact that I am able to specify the folder location in the app's settings.
So where the heck is the downloaded offline content? Why isn't it actually downloading to the folder I specified?
Furthermore, unlike with the Android app, I can't seem to specify the quality level for downloaded content. So what quality is it downloading the offline songs in on my Mac? Is it the same as the high-quality streaming, better, or worse?