So: now that i've found the thing completely drained, it's time to learn about what appear to be several statuses of off-ness: When i press the sleep/wake button briefly, the unit appears to go off. However, when i hold down the s/w button, i get the red slider. What's the difference? I can also push down the s/w button when i am listening to something, which continues to play although the display goes off. What is the status then? I have set it to lock after 3 minutes, but is that the same as going off? And if it's called a sleep/wake button, when does it wake? Thanks!