audio

Good Morning, Vivi.

There are a few things you may want to look at here:

1. If you are inserting your YouTube video as a Video from Website, the volume slider on the Presenter player also controls the volume of the YouTube video, whereas if you are inserting your YouTube video as a Web Object, the volume will be controlled by YouTube's embedded volume control.
2. If you import a stereo audio file into your Presenter '09 presentation and find that the volume level is lower, quieter, or softer than expected, the left and right channels of the audio file may be out of phase.  Click here for more information on how to determine if an audio file is out of phase, and how to correct it if so.
3. Presenter's built-in audio editor has the ability to Change Volume.

Please let us know if you need anything else, and have a great day!