I have my own way I would like to share.

I set up a folder in C:\Cakewalk Content\Audio Library
and name it my waves and midi.

Next, from biab i drag whatever tracks or songs i want into that folder.

Then I go into Sonar and insert a wave or midi track, then go to my media tab on the browser and I can simple place either the wave or midi into the desired track.

Biab 2019 ultra pack
Dell laptop I7 running windows 2010
Midi keyboard
Roland BR600 8 track recorder
Sonar X3 producer
flstudio 20