Wav doesnt store the cover inside the file.
We have a dedicated BS5 section here, http://forum.beoworld.org/forums/53.aspx
If nobody picks up here on it, I am sure this has been anwsered somewhere in there.
are you on Mac or PC? I think PCs typically use Beoplayer.
Cheers
JK
BS9000, BS2300, BC2, BL2500, BL3, Bl2, BS1, BV8, BC4, A8