Hello! I was having an Issue with this as well! All software was updated (or so I thought) and so my teacher online posted an annoucement for audio issues.. well, I use safari. So this is what I've found. I updated ALL Adobe.. still didn't work. Came here read most of this, not all so just in case, so this is more up to date this is where I went:
http://www.adobe.com/support/connect/downloads-updates.html#additional-downloads
Find
Click either:
Download latest Adobe Connect 9 Meeting Add-in for Windows(version 11.9.972.8, ZIP format, posted on November 13th, 2014, more info)
Download latest Adobe Connect 9 Meeting Add-in for Mac(version 11.9.972.8, ZIP format, posted on November 13th, 2014, more info)
This helped me but I'm going to continue to look further into it to ensure it is correct and more permanent.