Regarding Proper Case. I could be wrong, but I think this is what tbm72 is requesting [url=https://www.mediamonkey.com/forum/viewtopic.php?p=496045#p496045]here[/url].

[quote=drakinite post_id=497196 time=1651384502 user_id=107828]
What do you mean by Proper Case?
[/quote]

The first letter of EVERY word is capitalized.

[url=https://www.computerhope.com/jargon/p/proper-case.htm]What Is Proper Case?[/url]

For example. Discogs only use Proper Case.
In my opinion, it looks much tidier for audio.

Case Checker is built in to MM5. Under the Edit Tags menu. What do you mean by Proper Case?

Where do I find Case Checker? And does it support Proper Case?
I only use Proper Case for my music.

Case Checker does have fixing apostrophes as an option built in, following https://www.ventismedia.com/mantis/view.php?id=18751. You can un-check all the other options to only fix apostrophes/quotes.
However, I'm seeing some issues with the current release... Might need a bit of work. http://files.drakinite.net/MediaMonkey_2022-05-01_01-17-26.mp4

But this doesn't eliminate the usefulness of Keeps' addon, nor the possibility of adding doublequotes to Clean Apostrophes. There's a benefit to being able to do it all in one action, such as with a hotkey.

I just noticed a new MediaMonkey 5 addon called [url=https://www.mediamonkey.com/addons/browse/item/clean-apostrophes/]Clean Apostrophes[/url] by [url=https://www.mediamonkey.com/forum/memberlist.php?mode=viewprofile&u=46959]Keeps[/url]. Nice work. 👏

I have always hated all those curly apostrophes and quotation marks, and have always tried to avoid them when tagging up.

I don't think this addon actually includes quotation marks, so that would be nice if it could be included. Also, if it's possible to include lyrics, then that would be even better.

[i]By the way. I always try and avoid curly apostrophes in my file names.[/i]