This is a very simple volume control dialog. You can raise or lower the volume. You can also mute it if you want.

*This controls the volume of your computer itself not the sounds of mIRC

alias voll { dialog $iif($dialog(volume),-v,-am) volume volume }
dialog volume {
  title "Toggle Volume"
  size -1 -1 220 30
  scroll "", 2, 7 7 145 19, horizontal top range 0 100
  button "Mute", 5, 160 7 55 19
}
on *:dialog:volume:*:*: {
  var %volume $round($calc($vol(master) * 100 / 65535),0)
  if ($devent = init) { 
    did -c volume 2 %volume
    dialog -t volume Toggle Volume $chr(160) $+(%volume,/100%)
  }
  if ($devent = scroll && $did = 2) { 
    vol -v $calc(653.5 * $did($dname,2).sel) 
    var %sound $iif($did($dname,2).sel = 0, $chr(160) No Sound,$+($did($dname,2).sel,/100%))
    dialog -t volume Toggle Volume $chr(160) %sound
  }
  if ($devent = sclick && $did = 5) { 
    if ($vol(master).mute) { 
      vol -vu2 | did -ra volume 5 Mute 
      dialog -t volume Toggle Volume $chr(160) $+(%volume,/100%) 
    }
    else { vol -vu1 | did -ra volume 5 UnMute | dialog -t volume Toggle Volume $chr(160) $chr(160) @Muted@ }
  }
}