I don't have the Audiophile files but...

If WAV files are present, BIAB will use those rather than WMA (compressed) files. If you wish, you can move selected folders of RTs and RDs to your internal drive. Make sure to place them in the correctly named folders (RealTracks, Drums) and point BIAB to that location using RD and RT preferences.

If you want the audio quality, it does not make sense to use the compressed versions.