I don't see a way to set metering in BIAB. Meaning, I don't see how to set whether a song is 4/4, 12/8, 3/4 etc. I noticed that when I would a load a 12/8 song from BIAB midi styles into RB, RB then sets the metering to 4/4. Of course, when you change it in RB, then the ruler gets out of wack and no longer lines up with the bars.

Right now, I am toying with the "demo" songs that are produced when searching the midi styles. I will load one up and then start using that song info and saving it as a mgu and then loading that into RB.