Problem with Audio on devkit8000

Hello

I am using devkit8000 with Angstrom distribution running on it. The
problem i am facing is that the board hangs whenever i am using
audio.

I am using the commands :

arecord -t wav -c 2 -r 44100 -f S16_LE -v k and

aplay -t wav -c 2 -r 44100 -f S16_LE -v k for recording and play back

The problem is that the board hangs everytime after recording or
playing for about 5 seconds.I also checked playback using the
mplayer.But same thing happened.

What could be the problem???How to solve this???

Thanks in advance

Harikishanlal