Alsa on beagleboard

hi all,
        I m new in new in beagleboard project.I m using Angstram linux
v 2.6.27 on beagleboard.I want to enable alsa module on that.

Plz can any one help me to port Alsa drivers and utills like aplay
and arecord on beagleboard.
I have tried narcissus builder for build the rootfs with alsa but
their is no option for selecting the kernel version and i have 2.6.27
kernel.