madplay 'audio: /dev/dsp: No such file or directory'

Hello, i'm here again 

Now i'm trying play mp3 files inside friendlyarm mini2440, i saw some thing
about madplay, when i run the command in shell

"# madplay /root/audio/10.mp3 
MPEG Audio Decoder 0.15.2 (beta) - Copyright (C) 2000-2004 Robert Leslie et
al.
audio: /dev/dsp: No such file or directory"

This happen, surfing in google, i not found anything good someone can help
me?

Solved, if someone need future help run this command:
# mknod /dev/dsp c 14 3
Playing Aerosmith perfectly.