I'm tempted to record what I'm hearing with a recorder or something, because I can pick out the jingles just fine. (As well as the "meow!" at the end of Katt's appearance.)I've tried it every way; a full 5.1 system, a soundbar, the TV speakers. It always sounds like shit. Headphones are arguably the best result, but unfortunately because the game routes a bunch of sound through the gamepad with NO OPTION for anything else (because, again, there are no options whatsoever basically) you lose a bunch of audio by using headphones.
It's a mess. Honestly, if you can pick out something like, say, the Jingle that plays when Katt or Bill appear, you must have the hearing of a dog or something, because it's just a muddy mess in the mix for me no matter the situation.
But I believe you. I just wonder if there's something with your setup vs. mine.