Not necessarily.

Unless I missed something, your question is theoretical since you did not say you have any .WAV or .FLAC files.

If you did not purchase the Audiophile Windows version, then you received only .WMA files. You should not have any .FLAC or .WAV files anyway.

If you purchased one of the extra paks and PG Music sent you the audiophile version of that pak, perhaps in error, then you would have some .WAV files before 2025, and .FLAC files from 2025 and 2026. Compared to the enormous size of files from 2009 until 2024, this would hardly be worth worrying about.

BIAB will use the audiophile quality files if you have any. The order it searches is .WAV, then .FLAC, then .WMA.

So, if you actually have any .WAV or .FLAC files, keep them because they will sound a little better. If you are desperate for space, then you could delete any .WMA files in folders where you ALSO have a corresponding .WAV or .FLAC file. It's totally not worth doing this, though. If you decide to go ahead, make a backup first, or better, buy a bigger portable USB SSD drive for your collection of RealTracks and RealDrums.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Presonus 192 & Faderport 8, Royer 121, Slate VSX, Adam Sub8 & Neumann 120 monitors.