Sound....

Hi. I am learning to play the flute and also the clarinet I downloaded both of those Obie Leff apps. When I open either of the applications, the sound doesnt work. I am very disappointed because I would like to know what the note sound is. Even when i have volume all the way up, the sound doesnt work. Please fix this, otherwise I am going to keep giving ratings that are

lexi.is.queen about Flute+