I have had the same thing happen on some FTD's samples. I am sorry. Wish I could help you. I don't know why.
I dream a world where man no other man
will scorn. Where LOVE will bless the earth
and peace its paths adorn...
It also seems to be happening for me on certain ones. But others with the WM it works so I have no idea. Sorry I can't help any.
I have the same problem on the majority of the samples, although some of them do play. I've asked about this before, but I've had no response!