Select 'audio' from the options across the top of the screen. Select 'import audio'
Navigate to the audio file you want to use, select it and it will populate the audio track.

Audio track is hidden in the normal window. Select the 'audio' button on the far right just below the tracks window and the audio track will be visible.

The same can be done in Realband which is included with BiaB 2014 and the import and audio chord wizard is easier. Plus you will have a total of 48 tracks available for midi or audio. It will populate the chord chart the same as BiaB and you will still have access to many of the BiaB features.

Realband is better suited for the task you are attempting in my opinion.

Charlie

BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.