Default Titanium Backups to APK

Hi everyone, here's the deal...
When I was running dalvik i used to back up my apps using titanium backup. Long story short, I'm now running ART and I'm getting an issue with installing Nova launcher back onto my phone from the play store. I have my Nova zip file on my computer, but I want to make the zip file an APK so i can put it on my Nexus and install it. I need to do it this way because I'm on ART, so I can't use TiBu to restore the file. Thanks in advance!

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