Hi guys i need help quickly!!!!

I just built my saber together and everything works fine, I put one default font onto my sd card and one self-made font. Off course I formated it before I did that. The default nano biscotte sound font works perfectly but my self made font doesn't. It is like that: I renamed all the files to the right name, I formated the SD-card, but when i want to switch to my font there are two beeps because it can't find a boot.wav allthoug I have one. Then when i ignite it the poweron sound plays totally normal. Then my Hum plays for 2 seconds or so and than i have no sound at all. Only some swing sound work sometimes. But if you listen closley you can hear a very strange but low noise.

I really need help fast because I don't know what to do know and I want to show someone my self-made sound :/

I hope some of you can help me