You should replace the music, use an AI music generator like Suno to make tracks for you. Here's a prompt you can use for undertale type music...
"Create a whimsical yet emotional 8-bit style track, with simple chiptune melodies, playful rhythms, and moments of melancholy, inspired by the soundtrack of Undertale. Include a mix of quirky percussion, nostalgic synth tones, and catchy leitmotifs that evoke both adventure and heartfelt character interactions."