This function returns the volume level of an instance of the Speaker client program running on a computer.
Parameter: host
Type: string
Description: Leaving this a null string will return the volume level for
the first instance HomeSeer finds, otherwise use the hostname of the computer
you are interested in determining the volume level of. If
more than one instance of the Speaker application is running on "host"
then you may need to specify the instance as well in the format host:instance.
Return value: volume
level
Type: integer (.NET Short)
Description: The volume level is returned using a 0-100 scale, 100 being
full volume.