problem finding folders on external drive

i have an extrnal drive with all songs on it, i am trying to extract the songs, that are in mp3 format, i can find the folder for the songs, the songs are there when i look at them on my desk top, but when i search for them on my laptop, with the drive in the usb, again it finds the folder, but says there is no songs, so what must i do to get the songs to show??? i am using the windows version