Reported by David Murciano, Oct 27, 2009

Hi,

I'am trying to use the SDplayWAV library to play .wav files. It 
works with a microSD module, where the files are stored (FAT16). The 
microSD module can be attached to the Diecimila board. However, I 
have problems when running the example Play_WAV_files.pde that comes 
with the library. The function card.open_filesys() fails, so I get 
the corresponding message from the serial monitor:

“Couldn't open filesys”

Does anyone know which is the problem? I think I am doing everything 
well. For instance, I can run without problems the example code of 
the SDuFAT library, which opens a file in the SDcard.

Some more details:
- MicroSD card in FAT16
- Arduino Duemilanove (ATMEGA 328) or Arduino Diecimila (ATMEGA 
168). In none of them worked
- I have tried arduino IDE 0013 and 0016
- I have tried Windows XP and Linux

Thanks in advance