"With over 24 hours or playback time I would personally rather keep the VERRRRY small size rathar than have the bulge AA or even AAA batteries would add. Honestly, how long are you ever away from a charging source? "
Its not about being away from a charging source for so long, but instead about remembering to charge the player, and leaving time to do that. While some people want the thinnest player possible, others wouldn’t mind a slightly thicker player if it gave them more options, as long as the player still fits in a shirt pocket. Some models could have a built in battery to be ultra slim, others could be a bit thicker while having a replaceable lion battery, while still others could use a AA or AAA battery and have a smaller basic display without video. At least we should be given a choice, and not have player makers say you must have a built in battery whether you like it or not.
