Hey. and thank you for replying!
I've tried exporting as .wav and renaming it to an .mp3 initially.
Then I tried it once more, but instead exporting it at 44100 hz, 16-bit, and mono, as you said. (Still as a .wav, renamed to .mp3)
Most recently, I repeated the above (44.1 khz, 16-bit, mono)...