Hi I was using MM5 when I was viewing a play list I bumped something not sure what and where you have along the top of the play list headers, Title, Artist, Album, Date, Genre, Rating, Length, Source, and Path. Under the source collum random tracks were selected and a right arrow with another icon appeared and the track was like the track was removed or link broken and couldnt be played even though it was there. The only way I could fix it was rebooting the program. Not ideal if I was at venue.
Does anyone know what happened and not to happen again.