My MP4 player does not hold a charge...it used to.I don't know what happened.I have charged over night,I have charged it for shorter periods nothing works.I used to be able to listen to it for a couple of hours at least and now I am lucky if it gets thru a song before the hourglass comes on and shuts off.ARRGGH!!It's very frustrating.It sounds great when it's working,it just does not hold a charge.If it is plugged in with charger and turned on it plays fine. Although when charging the green light seems to come on with red light and then the green light turns off right away.When connected to Computer it works fine.I can download music ,videos and pics no problem.It just won't let me listen to my music when I am out and about.This is when I would like to have it the most.Please somebody help me! I am wondering if it is a problem with the battery or the charger...or is it something else? It is 1 GB MP4 Player.It is supposed to have a samsung battery(not sure which one).I have not opened it up to find out.It is from Wilson Co. Ltd. Firmware is B806G2V3.0 9 (Dated 12\14\06)the core version is 9.0.50 (Dated 11\2\06) If anyone knows anything about this please let me know.Also...just curious,if it is the battery or the charger can it be replaced? If so...where?