Windows Explorer Error when trying to copy files to an MP3 player

  I have a new Centon 2gb MP3 player. When I try to copy files to it using
Windows Explorer, I get the error message that I don't have enough authority
to do so.

How do I give myself enough authority so that I can drag and drop files to
it? Windows Explorer says that this is an "MTP Player" . I am able to Sync
files to it using Windows Media Player, but I like Windows Explorer's
flexibility.

Is there any way to do this in Windows Explorer? Thanks