Published presentations from Presenter have always had mono audio. So, I'm not sure if there is much you can do to get around it. Maybe try importing the video as and MP4 and see if that allows you to keep the stero audio from the video.
Thanks for the answer !
But this problem occured only for the video. I mean, when I export throught Presenter, others slides with mp3 are played in stereo. I try with mov, is working by now, but I'm not sure of the quality...
The MOV file is converted to FLV by presenter. Maybe there was something in the encoding of your FLV that was causing the issue, I've seen that message before and ignored it without consequence before.
If the quality is an issue, when you import a video into Presenter that isn't FLV or MP4, you should see an option to encode the video to low, med, or high quality. High quality can be used if the med setting (defalut) is not acceptable.
You are right, the FLV had an issue with the encoding..