How to make a sound that only one player can hear?

[Ikx_1]

I don't know how to make a sound that only one player can hear at the time, do anybody know how to make it?

I hope this is possible.

OMG, i just get it how to make it, but i just change the Upkeep... but that's not right way, does anybody know how to real do it??

EDIT:
Thanks for help Super-Sheep and Howl, but i need a diffirend trigger, i forgot to tell something about the trigger:

The idea is play a sound when the Zombie comes close:
(The sound starts when your upkeep swithes)

• Zombie Is close
  • Events
    • Unit - A unit comes within 600.00 of Villager 0020 <gen>
    • Unit - A unit comes within 600.00 of Villager 0021 <gen>
    • Unit - A unit comes within 600.00 of Villager 0022 <gen>
    • Unit - A unit comes within 600.00 of Villager 0023 <gen>
    • Unit - A unit comes within 600.00 of Villager 0028 <gen>
    • Unit - A unit comes within 600.00 of Villager 0029 <gen>
    • Unit - A unit comes within 600.00 of Villager 0030 <gen>
    • Unit - A unit comes within 600.00 of Villager 0031 <gen>
    • Unit - A unit comes within 600.00 of Villager 0032 <gen>
  • Conditions
    • Or - Any (Conditions) are true
      • Conditions
        • (Unit-type of (Triggering unit)) Equal to Zombie
        • (Unit-type of (Triggering unit)) Equal to Big Zombie
  • Actions
    • Player - Set (Owner of (Triggering unit)) Food used to 100
    • Wait 0.01 seconds
    • Player - Set (Owner of (Triggering unit)) Food used to Time[0]

Triggering Units (In actions) must be the Villagers no the zombie, but how to do it, like this:

• Zombie Is close
  • Events
    • Unit - A unit comes within 600.00 of Villager 0020 <gen>
    • Unit - A unit comes within 600.00 of Villager 0021 <gen>
    • Unit - A unit comes within 600.00 of Villager 0022 <gen>
    • Unit - A unit comes within 600.00 of Villager 0023 <gen>
    • Unit - A unit comes within 600.00 of Villager 0028 <gen>
    • Unit - A unit comes within 600.00 of Villager 0029 <gen>
    • Unit - A unit comes within 600.00 of Villager 0030 <gen>
    • Unit - A unit comes within 600.00 of Villager 0031 <gen>
    • Unit - A unit comes within 600.00 of Villager 0032 <gen>
  • Conditions
    • Or - Any (Conditions) are true
      • Conditions
        • (Unit-type of (coming unit)) Equal to Zombie
        • (Unit-type of (coming unit)) Equal to Big Zombie
  • Actions
    • Player - Set (Owner of (The Villager)) Food used to 100
    • Wait 0.01 seconds
    • Player - Set (Owner of (The Villager)) Food used to Time[0]

 

[howl2000]

Used search

Result 1

 

[Super-Sheep]

• Play sound for a player
  • Events
    • Player - Player 1 (Red) types a chat message containing -sound as An exact match
  • Conditions
  • Actions
    • Set TriggeringPlayer = (Triggering player)
    • Custom script: if GetLocalPlayer() == udg_TriggeringPlayer then
    • Sound - Play Sound
    • Custom script: endif