When i charge the mp3, can i play music?

MP3 players can only play music files in mp3 file format.You can download mp3 music files from the Internet toyour computer and then copy them to your MP3 player.For your CD collection, you need to convert your CDs tomp3 music files onto your computer or download them from the Internet and thencopy them to your MP3 player after you have connected the USB cable tothe MP3 player and the computer.
You can do this using Windows Media player and Rip the CDs - Media Player willcreate a MP3 music file for each music track.Click on this link for instruction on converting musicfiles to mp3 file format :- http://www.fixya.com/support/r5798418-creating_transferring_mp3_music_files

There is a Problem with the Mp3 Battery its not Charging get it Replaced!

There are two things possible.
1) You have defective re chargeable batteries in your GoGear.
2) There is some short circuit because of which the re chargeable cells are discharging.
Either way you should get the system changed. If you want to confirm if its the battery defect or GoGear. Charge the system fully and play music continuously. If the Go Gear plays for about 4 hours with out break---- its not the battery but the charging system.

You can keep the Sansa plugged in without fear of overcharging. The Sansa will play while it is connected to a USB port that is supplying only power, such as a USB charger operating off a car cigarette lighter. It will not play while connected to a computer.

you can try this, on the back of the unit theres 4 very small phillips head screws, if you take them out you can remove the battery and then put it back in and see what happens, if the conditions still the same you can purchase a new one on Amazon for short money, it comes in a kit with new screws and a little screwdriver.

Disabled it under device manager! So that it still draws power from the USB port without attempting to pair with the computer.

Press and hold [A>B/o] and [power/play/pause] buttons for four or so seconds. A screen pops up and like press the center, silver ['ok'] button about four times as a password or something. Doing this process wont delete your files or mess around with your settings.

Reason could be because if you are no longer an "active' customer, the mp3 player can't go out and download the "permissions/rights" needed to play the song. As opposed to the songs you rip because you are using the cd for that, which means the songs are yours. At least thats my opinion.

don't think it's possible. -when you charge and play via your laptop, the player is acting as a USB key and the laptop is doing the playing. -when you charge it via your in-car port you do not have a 2nd device on which to play tunes. it's either charge or play i'm afraid

delete then re sync