Most of the posts here seem to be related to usage on a standard day of web/video access etc. How about it if was mainly being used for an audio player. I plan to take some trips to other countries and currently bring an ipod 80GB on the plane to listen to some tunes if the movies are bad or for while im sleeping.

Does anyone have some insight into how long they would expect the battery to last with just audio playing (Wifi/GPS/Phone OFF). One could expect vastly more than the 10-12 hours with wlan etc right?

Any info for that would be helpful thanks.