Very hard to get help with the post like that. Give us some details. What kind of audio doesn't work, what are you composition settings, your audio settings, your audio hardware. Got an office full of Macs everything works fine here.
If you genuinely want help, we will need to know a lot more information. As Rick says, most people with Mavericks are working with AE 12.2 with no problems. It may be a bug or it may be something we can help you fix, but we certainly can't help you figure things out without more info.
I believe I am having a similar issue to the original poster. I updated two of my computers to AE 12.2. When adding a render to the queue, it is not possible to select any audio format besides 8kHz. The resulting render sounds awful.
Luckily, I have a couple that haven't done the update yet, so those are useable for renders for now. I've tried uninstalling and reinstalling After Effects on the computers with issues with no different results.
All computers have the same config:
Latest model Mac Pro
12 x 3.06GHz
AE 12.2 (the two with audio rendering issues)
I'm having exactly the same problem, can't select anything but 8kHz, any fix for this Adobe?
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FYI: We found a problem with the bug-fix update, so we needed to build a new patch and redo some testing. We're still working on this and hope to have a bug-fix update out within a week or two.
In the meantime, here's a post about some known issues and their workarounds:
This problem is addressed by the After Effects CC (12.2.1) bug-fix update, which is now available:
Note the part at the end of that page about a crucial update for the Creative Cloud desktop application, which addresses some severe problems with AME, Premiere Pro, and After Effects.