Originally Posted by Charlie Fogle
< Move the cursor to where you know the actual ONE beat first occurs. You can zoom in and edit/drag that first Bar Line to get it exactly on the ONE. >

All of the information and instructions are spot on. I haven't seen it mentioned, but using this information above from Guitarhacker, BIAB has a feature where all of the instructions above can be bypassed and bar 1 set, the audio moved and the audio file ready for the ACW analysis with a single click.

Although it's not necessary to accomplish setting Bar 1 by initially turning the ACW off, I recommend to turn it off for this step. This menu selection is only available with the ACW turned off. Since you've encountered issues setting the first bar with the ACW on and hitting -L-, this method makes accurately setting Bar 1 easier.

Turning the ACW off, converts the window view to the Audio Edit Window. (Clicking the ACW button toggles the ACW on and off )

Set Bar 1 like Guitarhacker states above and right click anywhere on the screen and select the 'Set this point...' option and the curser line will be set by the program as the first bar. Then turn the ACW on and proceed normally.

Dang, I knew somebody had told me in the past about where that darn "set as first measure" command was hiding. Thanks for the distinction about the ACW button being on or off.

With this method I would still think that protecting the lead in silence as Noel96 suggests would be critical when dealing with a song that has a pickup note and you want that pickup measure to not overlap the BIAB 2 measure count-in