1. 101 Things You Did Not Know Band in a Box Can Do
2. How to make your Home Studio Sound like a Million Dollars
3. Programming Secrets to Practice, Accompany and Create Music with Band in a Box
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As a BIAB user I'd seriously consider #1 but it would be of no use to non-BIAB users I guess. I think 101 things would be difficult to come up with and I am always disappointed by books that make such a claim and them give 90 things that are common or typical and then only a handful of new ones.
Would #2 be targetted at BIAB users? If so it should prolly have that in the title. Again, a book I'd seriously consider. Honestly "a Million Dollars" sounds a little hypey to me though.

Now, #3 would be interesting if I knew what you mean by programming. As an actual programmer (C++, Pascal, BASIC, PHP, Javascript & VBScript) I suspect there will be no actual programming in this book but maybe I am wrong. If this book is about how to code audio extensions to BIAB I'd be quite interested! Otherwise I'd not use the term programming.
I guess if I had to pick one I'd say #1 as I love to discover new things about my tools!