http://recordingeq.com/reflib.html#top
.BIN
Binary - A numbering system based on two. In binary there are two symbols used ("l" and "0").
.WAV
Wave - A continuous fluctuation in the amplitude of a quantity with respect to time.
Now all we need is an engineer to translate these for us
Also found .WAV is the audio format used by Microsoft Windows
Haven't seen anything we don't know so far regarding CD+G which would give a clue to the difference.