I purchased a MP3 Trigger for my Wall-e project. After building the trigger, I have connected a speaker, supplied power and it works. But when I connect it to the EZ-B board the trigger does not work. I have played around with the settings but with no luck. Do I need to use some particular naming convention for the MP3 files? This is the last piece to my Wall-e project and everything except this is working. Thanks in advance for your help!