advanced issues with my program

[alaa123456789]

Hi ALL
i am doing one program to play Holly quraan from website (attached) , the program has different issues. from time to time i run it 
some times when i run it i get this error as per "capture.png"
 another time it work for some names but not for others even i am getting the right file name

also the memory leak issues as per capture1 , capture 2

please help to develop the technique to figure out and solve the software issue in the future

thanks