MP3 player with file names arduino

received 201 today and it`s stereo yes. If you have the code for quering filenames can you please share it with me....
This is what I get for test1, test 2, test3, test 4
Brez naslova
I have correct baud rate (115200), commands (play, next, ...) are working.
I have both serials set at 115200...