I just wrote this program as a proof of concept for using SDL2 audio functions instead of SDL_Mixer. This allows you to keep track of where you are in song1 and go to the same position in song2 (swap with space bar. It also allows 5 different enemy sounds to play (return key) and 5 different heart sounds to play (any other key). There's probably a better way to do this than opening 12 audio devices... but I don't know it yet.
need SDL2
make to compile