Could I suggest that maybe you replace flat text references to asfxload with a link to the download page for awesfx ( http://www.alsa-project.org/~iwai/awedrv.html#Utils ) or else to the main project page ( http://alsa.opensrc.org/index.php?page=asfxload ) ?
 
For a first time user, asfxload is a plenty irritating little utility without having the trail go cold in the tutorial like that.