[Shabi RoxX]

Use this:

pawn Код:

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    switch(dialogid)
    {
        case radio://if dialog id = radio
        {//then
            if(response)//if pressed OK
            {
                //playeaudiostream
                PlayAudioStreamForPlayer(playerid,"http://stream.radiohunter.com.br:7070/listen.pls");
            }
            else(!response)//id canceled
            {
                //else nothing
            }
        }
    }
return 1;
}

EDITED: did a mistake :