ACW works great in mac, even the indentation of part markers is good, as well as in Windows.
But, I cannot get the audio playing in background once I return the chords to BIAB.
There's no indentation kept, so, what I have done and gotten in ACW is pretty better than what I keep in Biab afterward. The only result I get are the chords to be played by another style in Biab. Disappointing.
Please, link audio to the .sgu, otherwise give ACW the possibility to save its results as an actual standalone program.

I know that most efforts are put in realtracks development, but please give mac users those great features Windows users have had for years, as well as the possibility to watch Lyrics of .kar files on screen, for karaoke play.