Whoa! Hey! Never mind. I figured it out, and it was stupidly simple. I didn't have the "REC/PLAY" buttons for those tracks selected yellow on the iPad mixer. That's all it took. Problem solved.
I'm wondering if anyone here knows how to do what I'm trying to do. I have a WAV file that I would like to import into a project on my L-20R, and then record additional tracks in sync with it.
Here's what I've tried: I create the project on the L-20R; then I remove the SD card and open it on my...