Qt App couldn't detect my usb sound card

[imanpakii]

Hi
I Run the Audiodevices example on my BBB but it seems the app couldn't detect my USB sound card.
The program shows noting in all field.
I'm wondering am I have to do something to export my USB sound card to my QT app like the

export QWS_MOUSE_PROTO=LinuxInput:/dev/input/event1

for adding Touch screen to my QT APP, Or it should be detect it automatically?
This is the result of aplay -l

card 0: default [C-Media USB Headphone Set], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Any help will appreciated
Thank You
Iman