[RM2K] NO SOUND TO MUSIC

I have imported midi music to my project folder and as you can see as far as I know it should be working.It has worked once then stopped for some reason. I tried to delete then import again and when I go to the database then System BGM, Title Screen (which is set to OFF)then try to play the track no sound comes out. I have a sound effect at the end of the event which plays ok thou if that helps. Am I missing something here thank you.