I missed this question earlier, but in case anyone is still wondering, the default location is:
C:\Program Files\PG Music Inc\Band-in-a-Box Sounds

You can change this location by running any of the playable_realtracks*sforzando.exe or hiq_instruments*.exe installers. So the location can be whatever you like, however you do need to actually run an installer (instead of just move the files), since the installers set registry keys to tell Sforzando where the instruments are. In addition, ALL PG Music instruments need to be in the same location.


Andrew
PG Music Inc.