If the place selling these will not answer a pre-sales question then keep shopping.
Before I go and buy a $70 Mp3 player, I'd like to know if it plays WMA files that are unprotected by Digital Rights Management. (i.e. the majority of my library)
On it's functionality list, it includes Mp3, etc., etc, and WMA (DRM). Does that mean that it won't play non-DRM WMA?