A weird issue came up today while trying to burn an audio CD.
The software I've been using for more than 15 years, k3b, was unable to burn a CD/DVD due to permission insufficiency with the burner.

It said I needed to go to k3b configuration and give permission to growisofs, etc.
I've never witnessed such an issue before. I looked it up, but whatever I tried didn't work. Eventually, I had to burn the project with Xfburn.
And then, the second issue came up:
It was a bunch of .mp3s and another of .flac files. The .flacs burned fine but the .mp3s sounded distorted, for some reason.
When it occurred to me that this was the case, I converted them to .flac and the burned result was fine.
Both these things happened on the PC running MX23 Beta in my parents' home.
I'm now trying the same thing on my desktop PC running the same MX.
Can anybody explain what happened?
P.S. I thought it was a software thing, so I posted it there, but the thread was locked.