HDAutils consists of 

  1. HDAstat

  Displays status of HD Audio controller and Audio Function Group (AFG) node.
  
  2. HDAplay

   Loads a PCM-coded file ( RIFF format, filenames usually having a .wav 
  extension ) into memory, searches a path to the lineout pin, then starts
  the HDA DMA engine to play and finally launches a shell. Exiting the shell
  will terminate the audio and release all resources.

   Hints

   - For notebooks it might be necessary to add option -s to use the speaker
     or -h to use the headphone instead of lineout.
   - HDAplay is no TSR. It's absolutely inactive while the shell command
     processor is running. The only thing that's running in the background is
     the HDA controller's DMA engine.
   - HDAplay won't do any format conversions. If the codec attached to the HDA
     controller doesn't support the format of the audio data supplied, then
     the output may sound "strange".
   - HDAplay: option -w, possibly combined with -c and/or -d is only useful
     in rare cases; usually options -s or -h should suffice to redirect output.

  For license see file license.txt