Sound Effects

  Standard mono IFF Samples, up to 64k in length, can now be loaded and 
  used as sound effects or reminders. The commands that handle them, 
  are similar to the image handling commands :

  - LOADSOUND FileName Alias  - will load the sample and name it "Alias"
  - FREESOUND Alias           - will free the above sample
  - PLAYSOUND Alias           - will play the sound once

  - SETSOUND  Alias VOLUME/SPEED value 
    Will set the VOLUME (1-64) or the SPEED (124-1000) ie the pitch.

  Sounds can be used as effects on all types of gadgets, and on other
  events like window open/close, RMB and xOnKey. There are 2 ways you 
  can do this.

  1.- You can define the sound effects globally, and these will be
      used in all guis:

      >  SET  SndOpen/SndClose/SndGad/SndRMB/SndKey Alias

      The easiest way to set these is from the Gui4Cli.gc gui (called 
      from the main Gui4Cli requester in the WB tools menu)

  2.- Or, you can define a different sound for every gadget, or key
      or window etc, using the Attribute system, with:

      >  SETATTR  mygui.gc/1 SOUND mysound <or> ATTR SOUND mysound

  The sound will be played every time the event is triggered.
  An attribute, if defined, will take precedence over a global sound.
  Note that with ATTR, sounds can also be attached to xONOPEN, xONCLOSE, 
  xRMB and xONKEY events.

  Example: (set the sound globally for all windows opening)

    FreeSound MySound               ; free the old alias (if any)
    LoadSound DH0:SomeSound MySound ; load new sample under same alias
    Set SndOpen MySound             ; set the sound

  Example: (set a different sound for a specific window opening)

    xOnLoad    ; load the sound in the xOnLoad event
       LoadSound DH0:SomeSound MySound

    xOnOpen    ; Set the attribute for this window opening
       ATTR SOUND MySound

    xOnQuit    ; free sound on exit
       FreeSound MySound