I am losing songs and artists from my collection.  about one of four of the songs/artists have been grayed out.  Is there anything that can be done to restore them? ... View more

Can't be fixed in a car without hardware addition or phone app with sound leveling.  Can be fixed on PC with software such as PAS graphic equalizer studio with sound leveling.  Don't know what would work with Apple on desktop or android/apple phones. ... View more