My department creates lectures using Presenter 6 and add mp3 files so that it plays the lectures and audio simultaneously. For the past several months, students who use macs have been reporting problems playing audio. When they open the lecture, the "No Audio" message appears in the navigation bar. We've come to find out that this occurs mainly for 3 reasons:
We have not been able to find a solution to the 3rd problem and I haven't seen anyone post it in the forum. Has anyone ever experienced this problem and know if it's related to Flash or the Mac audio drivers and if there's a fix for it? We require students to use USB headsets.
A more recent problem has come up that may be related to the USB headset problem. Lion OS users are getting the same "No Audio" message even without using a USB headset. They also have to refresh a couple of times in order for the audio to start playing.
I've had an Adobe rep remote to my mac to see the problem, however I wasn't able to replicate it because she had me share my desktop using Adobe Connect. Once the session ended, the problem returned. Here's a link to a .swf of one of our lecture files:
I've also attached a screenshot of the what we see while the lecture plays.
I assume the same contents working fine with windows users, right? And is this issue unique to Lion or happend to older version of OS? Is there limited HW model to cause this problem or it's various models for Mac?
There are many hits with this google search: site:discussions.apple.com Lion no audio
Thank you for getting back to me. Yes, the lectures work fine for Windows users. The issue with the headset occurs with all versions of the Mac OS. The issue without the headset occurs only with Lion. This occurs on all Mac models. I've done a google search and the answers do not really apply to us. Because sound works for everything else except the lectures. I've tested using youtube videos and the audio plays just fine.
I asked Presenter team about this issue. They got to think two issues from this thread:
1) There is some known issue with USB headset specifically in Plantronics Blackwire 610M/620M with unplugging and plug it back.
2) The audio system is put to sleep on Mac Lion by some reason and need to refresh the page once or twice to make it work again. This issue happen with Presenter file but not other tools. (possible bug for Presenter)
I recommend to submit Presenter bug in this form: https://www.adobe.com/cfusion/mmform/index.cfm?name=wishform
Sorry but I don't think we can help for your issue from Flash Player side.
Thank you for getting back to me. The issue with the USB headset actually occurs with all types of headsets. I am actually in touch with someone in the Presenter department as well. I posted this problem here just in case this was also a flash player issue. Thank you for the link to bug site. I will use that in the future.