Perhaps a bit late in the day, but whatever
PHP Code:
#include <sourcemod>
// HELP NOTES ON CREATING A SIMPLE DEFAULT SOUND FILE FROM GAME
// !sm_play <playername> buttons/blip1.wav --- from chat console - plays sound to client
//sounds shown here are taken from L4D1 path folder: \steamapps\common\left 4 dead\left4dead\sound\buttons\blip1.wav
public OnPluginStart()
{
RegConsoleCmd("sm_sound", Play_Sound); // type !sound in chat console
}
public Action:Play_Sound(client, args)
{
//note - 'buttons' is folder where wav sound file is located
ClientCommand(client, "play buttons/blip1.wav"); // working example playing sound to client
//ClientCommand(client, "play buttons/button14.wav"); // another sound
//ClientCommand(client, "play UI/helpful_event_1.wav"); // another sound
//ClientCommand(client, "play items/itempickup.wav"); // another sound
}