Apply diacritics to the playlist name

To get this letter ñ use option n n. To get this letter Ñ use option n Shift n. To get this letter é use option e e

The character viewer can be opened in the Music app menu > Edit > Emoji & Symbols. Look in the Latin section.

picas wrote:

Are you using Character Viewer to write the playlist name?

No. Just hold down the key and choose from among the options. For all the common ones that is usually the easiest way. Here is an article about it:

https://www.theverge.com/22347140/apple-mac-special-characters-how-to

Once you click to highlight the playlist name, any form of typing will be OK.

Hello Ferdy, I did not have a problem applying diacritical marks to a playlist name. See example below.

Are you using Character Viewer to write the playlist name?

Yes, I know that, but I thought if OP is having trouble the character viewer might be an easier option.

Don't know why you're telling me, I'm not the one with the problem.

So, did you manage to use character viewer for your playlist? What do you mean "Can't add anything to the library either?"