well i dont know how my wife did it but when she turns her iphone 5 on it plays music for a short period. ilike thaat, id like to srtup my iphone 4s to play something when i first turn it on and also when i turn it off. ive been searching for over an hour and cant find anything about it. foudn a program called istartup sounds but think it has to be jailbreak to use. ive looked all in my phone to see where to find this feature but nothing.