[PAWNO] Advanced Dynamic Radio R2

#file "player.amx"
#include <a_samp>
#include <YSI\y_hooks>
#define Audio(%1,%2) \
            PlayAudioStreamForPlayer(%1,%2)
#define Stop(%1) \
            StopAudioStreamForPlayer(%1)
new bool:RadioVehicle[MAX_PLAYERS char];
hook OnFilterScriptInit() print(">> Radio R2 successfully loaded.");
hook OnFilterScriptExit() print(">> Stop.");
hook OnPlayerDeath(playerid, killerid, reason) StopAudioStreamForPlayer(playerid);
hook OnPlayerDisconnect(playerid, reason) StopAudioStreamForPlayer(playerid);
hook OnPlayerCommandText(playerid, cmdtext[])
{
    if(strcmp(cmdtext, "/radio", true) == 0) return Useradio(playerid);
    if(strcmp(cmdtext, "/buyradio", true) == 0) return Buyradio(playerid);
    return SendClientMessage(playerid,-1,"SERVER: Unknown command.");
}
hook OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(newkeys & 8192)
    {
        if(GetPlayerVehicleID(playerid)){
            if(!RadioVehicle{playerid}){
                Audio(playerid,"http://webcast.emg.fm:55655/europaplus128.mp3");
                RadioVehicle{playerid} = true;
                SendClientMessage(playerid,-1,"To turn off the radio in the car then numpad4");
                SendClientMessage(playerid,-1,"To scroll through the radio, press N");
            }
            else{
                Stop(playerid);
                RadioVehicle{playerid} = false;
            }
        }
    }
    if(newkeys & KEY_NO){
        if(GetPlayerVehicleID(playerid)){
            new rand=random(6);
            switch(rand){
                case 0: Audio(playerid,"1");
                case 1: Audio(playerid,"2");
                case 2: Audio(playerid,"3");
                case 3: Audio(playerid,"4");
                case 4: Audio(playerid,"5");
                case 5: Audio(playerid,"6");
                case 6: Audio(playerid,"7");
            }
        }
    }
    return 1;
}
hook OnPlayerStateChange(playerid, newstate, oldstate)
{
    if(newstate == PLAYER_STATE_DRIVER || newstate == PLAYER_STATE_PASSENGER)
    {
          SendClientMessage(playerid,-1,"To turn on the car radio, press numpad4");
    }
    else if(oldstate == PLAYER_STATE_DRIVER || oldstate == PLAYER_STATE_PASSENGER) Stop(playerid);
}
hook OnDialogResponse(playerid, dialogid, response, listitem, inputtext[]){
    switch(dialogid){
        case 1:{
            switch(listitem) {
                case 0:{
                    Audio(playerid,"http://webcast.emg.fm:55655/europaplus128.mp3");
                    SendClientMessage(playerid,-1,"Are you wearing the headphones.");
                }
                case 1:{
                    Stop(playerid);
                    SendClientMessage(playerid,-1,"Are you wearing the headphones.");
                }
            }
        }
        case 2:{
            switch(listitem) {
                case 0:{
                    SetPVarInt(playerid,"Radio",1);
                    SendClientMessage(playerid, -1, "You bought a player with headphones.");
                    GivePlayerMoney(playerid, -5);
                }
            }
        }
    }
}

Useradio(playerid)
{
    printf("Use radio %s.",Name(playerid));
    if(GetPVarInt(playerid,"Radio") == 0)return SendClientMessage(playerid, -1, "You do not have the player.");
    return ShowPlayerDialog(playerid,1,DIALOG_STYLE_LIST,"Selecting a radio station","Europa plus\n\
    {FF0000}Radio OFF{FFFFFF}","ENTER","EXIT");
}
Buyradio(playerid)
{
    printf("Buy radio %s.",Name(playerid));
    return ShowPlayerDialog(playerid,2,DIALOG_STYLE_LIST,"Buy","Player","ENTER","EXIT");
}
stock Name(playerid)
{
    new name[MAX_PLAYER_NAME];
    GetPlayerName(playerid, name, sizeof(name));
    return name;
}
#endscript