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 launches a shell. Exiting the shell will terminate the play and release all resources. For notebooks it might be necessary to add option -s to use the speaker instead of lineout. It should be noted that 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. For license see file license.txt