Hey @cal184, this isn’t the best workaround for your problem, but through this article I found that the voice memo files are located at ~/Library/Application Support/com.apple.voicememos. You could go to that location and link from there like any other file. Unfortunately, the files are not named the same as what you see in the Voice Memo app.
Thank you, @tylermcrae7. This is the best workaround for now.
@cal184 Thank you for bringing this up. There is no direct way(such as AppleScript dictionary for Voice Memos) to get the url of a voice memo for now. We will take a look and see if there is any other way to support this.