Well this is meant as more of an "old school" RPG rather than the ones now where you're told exactly what to do each step of the way (and in some cases, guided to each objective). The idea behind visiting the library, is to encourage the player to learn more about the game before they leave town.
There actually is a quest tracker already built into the template I'm using (it's in the main menu), although visiting the library isn't considered a quest.
I did find out what was causing the music issue (I had it resetting to the beginning each time, and I had a 1 second fade in, which I cut in half). I've also lowered the volume from 100% to 70%, with you mentioning it being too loud, I realized myself it was too loud (I tested 80% first and it was still a little loud). I lowered both the city/field music and battle music.