[alsa-devel] aplay..no sound..no error..

Hi all..

I have installed alsa for my embedded board..(at91sam9263) when I use aplay utility I got,

$ aplay a.wav Playing WAVE 'a.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono

I am not getting any error message.. But no sound from speaker also..

What else I can try to listen sound from speaker..??

Thanks,