arecord and aplay commands not found

Hi,
     I am using 2.6.22.18 omap3 kernal.I am booting from card.
But if i try to give arecord -t wav -c 2 -r 44100 -f S16_LE -v k or
"aplay" it is showing arecord and aplay command not found.
Any suggestions regarding this.Anything will be helpful

Regards
Smitha Rajan

Can you try our updated validation process and report your success or
failure?

http://code.google.com/p/beagleboard/wiki/BeagleboardRevCValidation

Hi,
   The commands arecord and aplay are not found.
Thanks
Smitha Rajan