I need help

In November 2024, I went to Tijuana. I visited a flea market and bought two cassettes—one for recording and the other with something I couldn't identify. It turned out to be a podcast. When I got back home, I asked my grandpa if I could play the second cassette. I listened to it, but right now, I can’t share it. However, I’ve ordered a digitalizer, and it’s arriving on Wednesday. of january of this year and im screenrecording with my computer and im showing what i cant identfiy and im showing the cassette photo both when it arrives i will update you