Sorry if this subject has already been covered on the forum but I was unable to find it. I am using an SD card in my Bolero unit with albums simply dragged and dropped from my PC music folder onto an SD card. The music plays on the Bolero and shows the album and track info but only seems to want to play the tracks from one album at a time. I thought the mix button would be the equivalent of random and mix the album tracks up but this does not seem to happen. Does anyone know what the mix button actually does and how I can play tracks randomly please.