i see your video, from what i can perceive from the quality of the video, connections seem ok
are you sure about the bredboard connections? i still didnt use that before so i can't say anything about it.
what wav files are you testing? did you test my code without your busy pin adds?
these are my connections:
these are my files
0001.WAV (21.6 KB)
0003.WAV (21.6 KB)
0004.WAV (21.6 KB)