[Glad2BeHere]

use http://kiwi6.com/ what i recommend and u may wanna use sscanf 4 address, likes s[32] if typing address also u may want 2 use isplayernearplayer, and foreach so something like

pawn Code:

stock IsPlayerNearPlayer(playerid, targetid, Float:radius)
{
    new Float:x, Float:y, Float:z;
    GetPlayerPos(targetid, x, y, z);
    if(IsPlayerInRangeOfPoint(playerid, radius ,x, y, z))
    {
        return 1;
    }
    return 0;
}

pawn Code:

CMD:playaudio(playerid, params[])
{
if(sscanf(params, "s[32]", params)) return SendClientMessage(playerid, -1, "USAGE: /playaudio [music url]");
foreach(Player, i)
{
if(IsPlayerNearPlayer(playerid, i, 10))
{
PlayAudioStreamForPlayer(playerid, params);
}
}
return 1;
}

pawn Code:

CMD:playaudio(playerid, params[])
{
new Float:x, Float:y,Float:z;
GetPlayerPos(playerid, x,y,z);
if(sscanf(params, "s[32]", params)) return SendClientMessage(playerid, -1, "USAGE: /playaudio [music url]");
foreach(Player, i)
{
PlayAudioStreamForPlayer(i, params,x,y,z,10,1);
}
return 1;
}