Thanks Hugh and Matt for pointing me to the article which explains the difference between the Audiofile and ordinary version of BIAB.
It's beginning to become clearer to me now.
For it to be worthwhile in using the Realtracks in my music, they would have to be of a comparable sound quality to the recordings of the real instrument recordings that I export to Audacity from my 16-track digital recording machine (ie. 16 bit Wav files of 44.1 Hz),therefore I would only really be interested in purchasing the Audiophile version.
I still do not quite fully understand the relationship between styles and Realtracks in each version, but as there appears to be only one Audiophile version (ie. the most expensive version), I guess that question is academic unless I decide to go ahead with the purchase.
As it currently stands, I think that I'll just continue using BIAB 2008 to help me compose and arrange my songs, and then play and record the parts myself on real instruments, except for the Realdrums which I'll continue to use in some of my more simpler and straightforward songs.
Whilst it still does appeal to me to add some extra instrumentation to my songs from BIAB, it's clearly going be considerably more costly than I first thought it might, and it seems that I would be paying for an awful lot of features that I'm never going to use.
Hopefully, PG Music will release a more affordable slimmed down package in future which caters more for my specific needs, but I do agree that the various versions of BIAB are no doubt worth every penny to those who utilise it's many excellent features.
Last edited by Andyman; 03/09/17 10:26 AM.