I can't really see the issue here. Surely BIAB is primarily a system for making great song backings and has been hugely improved by the addition of RealDrums and RealTracks. It is not a DAW program and therefore not designed specifically to run loads of VSTs like a DAW is. Therefore the need for loads of RAM availability that you would obtain from becoming 64 bit is not essential. I can see 64 bit being a more significant feature for RealBand rather than BIAB. In addition surely it is not difficult to load tracks from BIAB to a 64 bit DAW program and continue from there. I repeat once again BIAB is not designed as a DAW. Therefore why get all heated up about it not being 64 bit? Seems to work pretty well as it is.