Hi again @[deleted], I've just been looking into this issue. I seem to recall having problems with Beatmaker and GTL before but I don't think there is anything I can do about it as other IAA apps seem to work fine in GTL.
Here are a couple of things you can do to make the setup smoother.
- Force close everything including GTL.
- Open Beatmaker 3 first.
- Make sure "Background Audio" is turned on in Beatmaker's settings. Without this Beatmaker will disappear when you bring GTL to the foreground and you may get a horrible buzzing.
- Then open up Group the Loop and set Beatmaker 3 as the audio input.
Hope that helps.