Time to experiment on the DFplayer. According to the program this should do the following Is there any reason why it always has to be pin 10 and 11 that are used in these blocks?
1. Play a song named 0001 at volume 4
2. Skip to the next song and play 0002.

This is using the Pam8403 digital. Otto must have a voice besides squeaking.
Camilo Parra Palacio Birger T