I too had ambitions for BIAB, expecting to be able to create lead-sheets for all the jazz pieces I play, along with backing for practice and rehearsal and separate printouts for transposing instruments.

I also thought I might be able to use BIAB to enter transcriptions of solos I'd taken from recordings, so that I could practice them along with BIAB.

The reality is that BIAB is first-and-foremost an accompaniment-generator and not a music engraver, and I now use Lilypond to produce accurate lead-sheets presented the way I want them to look.

Here's the best I could do for "Sandu" using BIAB:

http://dl.dropbox.com/u/22831598/Sheet%20Music%20PDF/Sandu.pdf

And here's a Lilypond version:

http://dl.dropbox.com/u/22831598/Sheet%20Music%20PDF/Sandu%20%28concert%29.pdf

As well as the grace-notes, 16th note triplets and glissando marks in the Lilypond version, you'll notice that the lead-in bar takes up a quarter of the first line in the BIAB version, so that the second line starts with bar 4, but Lilypond allowed me to ensure that bars 5, 9 and 13 start their respective lines in the usual way - much easier for a poor reader like myself to follow.

I now realise that I haven't tried exporting the Lilypond version to MIDI and then importing it with BIAB, to see if that produces a more elegant result - I expect it would sound correct, but the representation on the BIAB lead-sheet screen wouldn't be much different.

Lilypond is not for the faint-hearted - it takes a while to learn, but is VERY powerful. It has the added advantage that it's in the public domain, available at no charge in Windows, Mac and Linux versions.