Works on both the Uno and the Mega
In case someone - one day - does a search of this Forum in response to problems with this module let me document here that if you make wav files for it they must be mono, 8 bit and slower than 14KHz or it doesn't run,. You have been warned.

UPDATE:
I always admit it (well almost always) when I stuff up and Nerds and Nerdettes I have stuffed up!
The problems I have been having with this module have been due to a labeling error I made on the SD card.
Me BAD!
Thanks again Riva for trying to save me from myself.

Hi Riva,
Attached it to a brand new UNO and it still does not work

Has anyone here had any experience with this module on any version od Arduino?

Thanks Riva.
Rather than modify the board I've just ordered a UNO.
I'll let you know how/if it solves the problem.

Has anyone tried this module from Elechouse?
I purchased 2 and can't make either of them work on Arundio MEGA2560.
I've uploaded the Arduino code plus audio sample that comes from the elechouse website.
Any advice would be appreciated.