Emailing Audacity 2.4.2 dmg via zip file

Hi, I need to email my friend the audacity 2.4.2 dmg via Hightail Express zip file; does the zipping cause any issues on the other end?
(I use IMAC late 2012 OS 10.12.6, friend uses 10.13.6. I have to wait to use Version 3 for the time being (long story) so 2.4.2 is best for us both right now.)

I don’t see how zipping would cause a problem, but it won’t save you much space: a DMG is already compressed.

Your friend could download Audacity 2.4.2 from here.

– Bill

Why not just send him a link so that he can download it himself?
Audacity 2.4.2 is available here:


One more thing. Friend already has 2.3.3 on computer. When he clicks on the 2.4.2 dmg file, will that process replace the older version? Don’t want two at one time. I’m doing all this so that when he sends me his tracks, I’ve been told that working with one version on his computer and another version on mine may cause issues. I’ve already told him to back up his Audacity folder in Session Files in case the backup process loses anything.

Installation instructions are here.

When you drag the Audacity app into the Applications folder the Mac should ask you if you want to over-write the old version. Say Yes.

I’ve already told him to back up his Audacity folder in Session Files in case the backup process loses anything.

I don’t understand this. What is the “Audacity folder in Session Files” and why would the “backup process” lose anything?

– Bill

Thanks. Correction: (I meant the update process, not the backup process losing files.) in Mac, the Audacity File Folder (in User Library/application support/audacity/SessionData/Audacity File Folder) is where the actual sound files are stored created by Audacity. Recently when my Audacity got stuck I had to re-install 2.4.2 and (not having noticed any choice given about over-writing files) the installation erased those sound files in the Audacity File Folder. Luckily I had a backup. Anyway I’ll instruct my friend to follow those directions and look out for the option you mentioned.

The “SessionData” folder is where Audacity stores the files for a new, unsaved project. When you save your project and quit Audacity the files in that folder are deleted. If Audacity crashes it uses the files in the folder for the auto-recovery process the next time it is started.
Installing a new version of Audacity does not touch that folder. All that happens is that the new version of Audacity is copied to your Applications folder.
– Bill