WavTrigger won't recognize tracks

[golkit1]

Hi,
I have following the instructions in the example: I have donwload the wav files and copy them to my sd card.
When I uploaded the example code the serial window is printing:
"WAV Trigger v1.28
Number of tracks = 0"

It should have 9 tracks.
Why is not recognize the tracks?

[robertsonics]

Are you sure you put the wav files in the SD card's root directory? What microSD card are you using, i.e. how big and how is it formatted?

[golkit1]

Thanks for replying.
I did not format my disk the correct way. Is all good now!