[MlMt] apple mail sound on catalina

[chairephon at mailbox.org]

> Go into preferences > counters and select a sound from the pop-up 
> menu. It might be that your preferences were reset by the update. 
> I’ve been using Catalina for a while and my incoming sound works 
> fine.

I only can select sounds like glass, blow, etc. No Apple mail incoming 
sound.