COBY electronic MPC945 - Manual (Page 9)

5) Disconnect your COBY player from the computer.
Once the sync process is complete, unplug your
player from the USB port of the computer. Now
you’re ready to listen to music on your COBY
player.
NOTE: Any files can be transferred to the MP3 player by using
the drag and drop or copy and paste method. If you have
existing files on your computer, they can be transferred
into the MP3 player using any of the above method.