The userguide says, “As long as the files are WMA or MP3, they can be dragged into the Media folder.”
However, my player has a “Music” folder and a “Record” folder. No Media folder.
I’ve tried putting MP3 files in the “Music” folder, tried building new folders within “Music” similar to the preloaded ones, but the player doesn’t see the files, and will only play the files that came with it.
I’m running Windows XP, the player is a Sansa Express 1GB.