Do you use the SDCard Module on DFPlayer or another pure SD-Card Module ?
Until yesterday it works with normal filenames. i already renamed it to 0001.mp3 0002.mp3
The same with folder "mp3" but nothing works.
SD Card was formatted again with FAT32 and Default Size.
Here the actual result:
Initializing SD card...Wiring is correct and a card is present.
Card type: SDHC
Volume type is FAT32
Volume size (bytes): 3122659328
Volume size (Kbytes): 3049472
Volume size (Mbytes): 2978
Files found on the card (name, date and size in bytes):
SYSTEM~1/ 2018-05-16 13:49:24
WPSETT~1.DAT 2018-05-16 13:49:24 12
INDEXE~1 2034-13-16 13:49:30 76
MYCROL~1.MP3 2001-12-26 19:15:16 110417
SONG5~1.MP3 2000-10-15 17:59:38 163122
CATCH_~1.MP3 2001-12-26 18:59:42 128731
BGSOUND.MP3 2001-12-29 18:50:50 117366
RAVE-B~1.MP3 2001-12-29 17:53:06 117249
HAPPY_~1.MP3 2001-12-26 19:05:56 110868