You can put the SL to your stereo, there is a cinch-adapter. Because the stereo should not run the whole night, you set a time-switching clock on 7:29 am.
But if you do this effort, you better could plug a real mp3-player on your stereo, or the cd-player.
Or you sleep in while you have the earphones still wearing. But I think that would get you very bound by the next morning.
