transfer mp3 files

When you plug it in, does the device show up on the desktop or in the left panel in nautilus?

yes it does show in the left panel, as a 4,1 gb media system...

Some questions:
 * What kind of MP3 player is this?
 * Can you open the "4,1 GB Media System" Folder that you see on your desktop when you plug the player in?
 * If so, can you see mp3 files in some directory on that device (assuming you already have some music on this player)? Can you copy more music into that directory?

yes i can open the folder when i plug the player in..
but i dont know how to copy the files from my computer to the directory of the mp4 player..
it is an ordinary mp4 player with usb .

Harry,
 * What kind of MP3 player is this -- what's the make and model?

If you can find the directories of MP3 files on that device, there's a good chance you can just copy MP3 files there using drag-and-drop with Nautilus.

it is an Qware mp 4 player, i guess it wont work with drag and drop, Josh !
how ese can i move files to my player ?

According to this page:
http://manpages.ubuntu.com/manpages/hardy/man4/umass.4.html

The "Qware BeatZkey! Pro" will work as a "USB Mass Storage Device". In other words, you should be able to drag and drop files to a directory on the device and be able to play them.

You still haven't told us the model number (is it the BeatZKey! Pro? Something else?), or what happened if/when you tried to drag and drop files into a directory on the device.

the Qware player is the qw-404k and it does work as a usb mass storage device, to my surprise when
i tried to drag and drop the downloaded mp3 files it seemed that this was already done,

only on the player i cannot find the file, but i guess i did something wrong,

although i have confidence that it eventually will work with a little change.

thanks for the help, especially Josh....