Originally Posted by Hamza Murad
does file manager show the files?
Clear data of the apps from settings>applications
try to recopy the files
download mx player or apolo music player and check if they show files
Also: try to copy just one file to the internal SD-card, search it up in the gallery, and then move it back to the external SD. Sometimes this triggers the system to read the files.
If you have tried everything mentioned here, and nothing works: make backup of the SD card and format it. Then move everything back. This should work, but it's the most time consuming so try the other things first
Hope I helped, and have a nice day
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