How do I include two pieces of music in a tutorial?

Hi, I have two pieces of music in this tutorial. Everything prior to layout "1" plays one song and on the start of layout 1 I have another song playing. The problem is that in layout 1, there's a bunch of options for the player to choose and when an option is picked and the return to layout 1 button is pressed, the audio re-starts from the beginning instead of continuing. How do I create a system where it's like a checkpoint and the music just continues or restarts where it left off? Here's the project: https://drive.google.com/file/d/1TZbzUH5abUCibh1STST07cIF99FNBruJ/view?usp=sharing