SD Card remains "empty"

How did you add the songs to the card? Did you check to make sure the songs are on your card? Both through the device and a separate adapter - both on Linux and Windows. Did you insert the card while the player is off? did you insert the card in the player until it clicked into place? It was off and it clicked. The card is recognised, just not the data on it. Did you try to navigate to MUSIC> folders on the player and see if your songs are there? That’s what I done. The card shows as empty. Are your songs properly tagged with ID3 V2.3 ISO 8859-1 tags? Yes, I done a directory listing, there is only one media file on it and the only special characters it uses is a whitespace, . and ()