Originally Posted by borisb

I posted this elsewhere in the forum, but if you keep your music/podcast app open on the LCD side when you close the eDGe, the eDGe won't go to sleep (i.e., it won't turn off wifi or bluetooth, and will keep playing music). Conversely, to ensure the eDGe goes into power saving sleep mode, click the "Home" bezel button before closing the eDGe.

I just tried this on my eDGe, and for some apps, like the built-in Music Player, it seems the app prevents sleep mode anyway if it's playing. However, other apps, like RadioLive, won't prevent sleep mode even if playing and if visible on the LCD side.

So basically, some apps will work with the eDGe closed, some won't. Experiment and you'll easily be able to find out which apps work which way.