Reaper a relatively inexpensive software program for multitracking, akin to PowerTracks or RealBand, but without any sort of support for BiaB. That is, you can work with MIDI and .WAV files (among other types), but not RealTracks.

Once I've created a song in BiaB, I create .WAV files and edit them Reaper. Before exporting tracks that play slower than the recorded tempo (such as a flute or saxophone), I'll set the tempo in BiaB up to the preferred tempo for that track, and export it at that speed. When I bring the tracks into Reaper, I stretch them out there using one of the higher quality algorithms (Reaper offers a number of different algorithms, including some that are fast, but low quality).

The algorithms that got the best results were elastique licensed from zplane technologies, and DIRAC LE, licensed from The DSP Dimension. Of the two, elastique pro seems the more popular, since it's also licensed by other DAWS, including ableton Live, FL Studios, Mackie Tracktion, Acid Pro and Cubase.

I couldn't find any free software that performs better than BiaB. Audacity is free and easy to use, but its algorithm performs worse than BiaB. ACID Xpress limits the saved file to low quality.

Edit: There's a free program called BestPractice that seems to do an OK job, but I haven't really tested it so I won't say it's better than BiaB. Also, I'm not sure you can get the timing precision out of it. But it's certainly easy to use.

I suspect it wouldn't be that difficult for PG Music to incorporate elastique pro or DIRAC LE into their products, but I don't know what algorithm they use, or how it's applied. And unless there was demand from users to support slower tempos, I'm sure they've got higher priority items.

Last edited by dcuny; 11/29/10 12:23 PM.