public OnPlayerRequestClass(playerid, classid)
{
    PlayAudioStreamForPlayer(playerid, "MP3 Link here or a Live Station"); //Insert a Link here to play for the player (I'd recommend using http://www.mp3fiber.com for easy links from *******)
    return 1;
}

public OnPlayerSpawn(playerid)
{
    StopAudioStreamForPlayer(playerid); // Nothing goes here except for this.
    return 1;
}