Levelator working with Catalina? One big app that we use constantly and is arguably the best (free &amp; simple) tool to automatically adjust audio levels for podcasts and any kind of recording is Levelator. There's simply no directly comparable replacement and unfortunately it's a 32-bit app that won't run on Catalina.  This is just one app that I can't live without and using a virtual machine for this one thing with such consistency is really a showstopper for "upgrading" to Catalina.  Sadly since the app is no longer maintained, there doesn't seem to be any hope to get a 64-bit version from the now-defunct developers.

Does anyone have any method to update or hack Levelator so that it'll run with Catalina since it appears to be primarily a (compiled) Python script?  

I'm wondering if perhaps the python bin can be updated and still execute Levelator's obfuscated script?
Perhaps not the solution you're looking for, in that it is not free (the "Basic" plan is $6/mo), but Landr offers a great online tool to "Master" all audio, add levels, tone, warmth, etc.  Hope some of this helps.