Audio files not being exported

For my first test of the new audio capability I turned it on for a 20 minute meeting and then, of course, forgot to turn it off and wound up with a 1h 40m file. I don't want to waste AI on it until I chop it down but there is no way to do that in the app (maybe in a future update?) so I exported it by picking 'File' and it said it exported as a .weba file but it is nowhere to be found, even after waiting 10m or so. Seems like a bug.