public OnPlayerTakeDamage(playerid, issuerid ,Float: amount, weaponid, bodypart)
{
    if( issuerid != INVALID_PLAYER_ID && weaponid == 34 && bodypart == 9)
        {
                GameTextForPlayer(playerid, \"~r~HEADSHOT!\", 4000, 6);
                GameTextForPlayer(issuerid, \"~r~HEADSHOT!\", 4000, 6);
                for(new i=0; i < MAX_PLAYERS; i++)
                {
                new Float:X, Float:Y, Float:Z, Float:Distance = 5.0;
                GetPlayerPos(playerid, X, Y, Z);
                PlayAudioStreamForPlayer(playerid, \"file:///C:/Users/Admin/Desktop/samp/filterscripts/headshot.mp3\", X, Y, Z, Distance, 1);
                PlayAudioStreamForPlayer(issuerid, \"file:///C:/Users/Admin/Desktop/samp/filterscripts/headshot.mp3\", X, Y, Z, Distance, 1);
                }
        }
}
->
public OnPlayerTakeDamage(playerid, issuerid ,Float: amount, weaponid, bodypart)
{
    if( issuerid != INVALID_PLAYER_ID && weaponid == 34 && bodypart == 9)
        {
                GameTextForPlayer(playerid, \"~r~HEADSHOT!\", 4000, 6);
                GameTextForPlayer(issuerid, \"~r~HEADSHOT!\", 4000, 6);
                PlayAudioStreamForPlayer(playerid, \"file:///C:/Users/Admin/Desktop/samp/filterscripts/headshot.mp3\");
                PlayAudioStreamForPlayer(issuerid, \"file:///C:/Users/Admin/Desktop/samp/filterscripts/headshot.mp3\");
        }
}