Tom, in a correct installation there will be both a WMA file and a WAV file for each sound, in the same folder. So I think you’ve answered your own question. PG Music Support could help you sort it out, but it does make sense that you did not install the audiophile version files to your laptop. That internal drive is not big enough; the audiophile version takes up about three times the size of your one drive! On a laptop with less than a 2 TB drive (and that’s almost all of them), you have to do the minimal install of BIAB but then be sure the RealTracks and RealDrums point to the external drive supplied by PG Music (and keep that plugged in). This setting is found in Options, Preferences, RealTracks (and same for RealDrums) where you select a Custom Folder.
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BIAB 2020 Win Audiophile & 2020 Mac UltraPak. Software: Cakewalk, Adobe Audition CC, Notion; Win 10 64 Pro. Hardware: custom i7 16 Gb; Roland Integra-7, Focusrite 18i20(2), TCE Finalizer, Behringer X-Touch, Adam sub & monitors.