Sony DAPs only look for music in the "music" folder. If using a micro SD card, use the DAP to format the card. One of the default folders created will be "music".My internal Music Storage shows up as empty, and 'no music files found' is reported for the internal in the Sony music app. No files show in the music folder, but when I try to add files I know I have in the internal storage it tells me they are already present. If I add a file it then shows in the external file manager, but still doesn't get recognised by the dap. Any advice other than factory reset?
All music, on the internal memory, or on a microSD card, need to be put into the "music" folder.
From the manual:
Update database button
Tap the button to update the database of “Music player”.
A purchased content or a transferred content may not appear in the library of “Music player”. In this case, ensure that
the music file is in the [Music] or the [Download] folder in the memory of the player, or in the [Music] folder on the
microSD card. Also, update the database.
For further instructions for a PC, see page 61 in the manual for "Transferring content using Windows Explorer"