Convert Fiio "Favorites" list to M3U playlist for USB Audio Player Pro

[watsamatau]

I am new to this forum but have been occasionally using the USB Audio Player Pro more if it would cooperate more.

I have been using Fiio devices for the past 15 years, and currently have two M11 portables, and an R7 desktop unit which has the USB Audio app installed. I have a Favorites file set up on the 3 Fiio units which has approximately 11,000 tracks on it. I know how to copy this file between the 3 units. This file however, is not a standard M3U playlist file.

The USB Audio Player app will recognize a playlist set up by the Fiio audio player app, but when I access the Favorites file thru the USB Audio Player app, it comes up as a playlist with nothing in it.

I've exported the Favorites to an M3U playlist, but it still comes up empty on the USB Player.

What I want to know is how to convert the Fiio "Favorites" file to a "Favorites" M3U playlist that will be recognized by the USB Audio Player as a playlist, not an empty file.

Can anyone tell me how to do this?

various files on the Fiio units are located at:
android/data/com.fiio.music/files/playlist
storage/emulated/O/android/data/com
internal shared storage/UAPP/playlists
internal shared storage/UAPP/playlistsV3
android/data/com.extreamsd.usbaudioplayerpro

[dwrae]

You would need to look at the contents of this FiiO exported file and see if it's empty and if not, what kind of paths/contents it has.