I had this exact same issue, deleting and regenerating soundbanks didn't work (they were generating to the proper location). 201 Lesson 1 worked perfectly but 201 Lesson 2 was missing footsteps, fire ice gem and music. In the profiler there was several errors including "Event ID not found" for Map_Loaded, Foot_Player and Fire_IceGem_Player, oddly Music was not showing this error. After adding said events to the Main soundbank and regenerating soundbanks the Music event started showing the "Event ID not found" in profiler, so I added it to the Music soundbank and it all works now. The only minor issue is footsteps only play every other step (they played every step in 201 Lesson 1), but that was an issue for me in certain lessons of 101 too. At least this was good practice using the profiler.