File list (Check if you may need any files):
DFPlayer-Mini-mp3-master\DFPlayer_Mini_Mp3.cpp
........................\DFPlayer_Mini_Mp3.h
........................\examples\DFPlayer_Mini_Test\DFPlayer_Mini_Test.ino
........................\........\.........PlayAll_SoftwareSerial\DFPlayer_PlayAll_SoftwareSerial.ino
........................\........\.........sample\DFPlayer_sample.ino
........................\........\.........SoftwareSerial\DFPlayer_SoftwareSerial.ino
........................\keywords.txt
........................\license.txt
........................\README.md
........................\examples\DFPlayer_Mini_Test
........................\........\DFPlayer_PlayAll_SoftwareSerial
........................\........\DFPlayer_sample
........................\........\DFPlayer_SoftwareSerial
........................\examples
DFPlayer-Mini-mp3-master