The ability to create a tempo map from a MIDI file would be a good feature but currently isn't possible - tempo changes are intentionally excluded when you import MIDI - so the AI answer is incorrect. However, you can use ACW to create a tempo map from an audio file as I think you know. It's fairly easy:

1. You need an audio file of the performance - import this into Band-in-a-Box on the Audio track or a Utility track. Audio menu | Import Audio.
2. Solo the track and add the bar lines by playing the song and pressing the Add Bar Line button in the ACW toolbar.

There's nothing else you need to do - this will create a tempo map in the current BB song file. Confirm by pressing F5 and checking the tempo changes.

One thing to note - make sure to set the first bar (bar 1) correctly, so that your (audio) performance actually starts on bar 1 of the BiaB song.


Andrew
PG Music Inc.