What sort of battery life are people getting out of their players? I left mine playing on repeat to see what I would get out of it. Volume has been delimited and was on about two-thirds. Sound was on Custom with the bass and treble turned up a bit. Recordings were at 256kb ATRAC3plus. I didn't touch the player until it ran out of power and got about 18 hours. Is this level of drop from the quoted 30 hours to be expected using higher quality settings etc? Also, the battery has only been charged twice. I have heard that the batteries last longer after they have been re-charged a few times. Is there any truth in this?