Track plays all crackles after updating Audacity

Apologies in advances: I know next to nothing about Audacity or audio engineering.
I’m running Ubuntu 22.04

I was on Audacity 3.3.3. I downloaded a track and trimmed most of it, selecting a portion. No problem.

Today I upgraded to Audacity 3.4.2, downloading the flatpak version.
I imported the exact same track. When I attempt to play the track, I get nothing but crackling.

That was an MP3.
I imported a .wav of the same track and got the same result: just crackling.

A ran a quick test: I imported a couple of other MP3’s. Again, I got just crackling.

What could be happening?

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