The answer is yes, you can still use the older RealTracks.

The newest RealTracks are not really 'smaller' in one sense; it's just that there are fewer files required, since the program used to need the other files for pitch shifting. Those files, called +/- in the RealTracks Options in Preferences, are no longer needed, now that the new and better pitch stretching algorithm is used. However, this only applies if your machine is fast enough to use the newest RealTracks and to eliminate the redundant older ones. Careful; there are many threads about this from around early December 2010.

The reverse situation is actually more problematic: users of BIAB prior to version 2011 cannot use the newest RealTracks. Perhaps that is what you were thinking.

EDIT: Rachael answered while I was composing my answer. She is correct. However, if your machine is several years old, go slowly and write back for more advice before deleting the +/- files to recover that space. One thing you could do is run Geekbench, a free benchmark program, and let us know what score you get.

Last edited by Matt Finley; 03/25/11 05:23 PM.
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; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.