For all versions of BIAB except the Audiophile, Real Tracks and Real Drums are supplied in a compressed file format (I believe it's WMA, but don't quote me yet). They take up less drive space but have minimally inferior sound quality. Note that you would probably have to have a moon rock sound system and ears to match in order to tell the difference.

The Audiophile version comes with uncompressed WAV files for higher fidelity. They take up much more drive space but provide full fidelity. For a full description of the package go here.

HTH,

Richard

"My primary musical instrument is the personal computer."