Western Rivers custom calls

[haley]

 
I have recently acquired a western Rivers dual speaker Fred Eickler e-caller. I am wanting to put different calls on it. I have downloaded from western rivers website but when I "drag and drop" the sound file into the base it does not show up. I was wondering if anyone that has one or uses one may have any tips or tricks? Any and all advise is welcomed.
Current E-caller is a foxpro fusion.