Audio commentary in PDF files

Question

I am using the audio comments button to insert audio into files, but I am wondering about the "default" quality of the audio files.  The comments have created file sizes of quite large proportion (up to 25 meg with only two audio comments, along with other textual inserttions).  Is there any way to "lower" the audio quality in order to conserve file size?  Thank you!

Answer 1

You insert new rich media annotations in Acrobat X Pro using the Tools Pane > Content panel > Multimedia button, which opens a flyout menu for Video, sound, SWF and 3D files.
In Acrobat XI Pro it's moved to the Tools Pane > Interactive Objects panel and each media type has its own button
Select the appropriate tool (e.g. Sound) - draw a rectangle on the page where the player will be displayed, then choose your file or enter a URL if you want the media to be downloaded 'live' to the viewer.
As to decoupling - the issue is not with what you've got installed when the PDF is created, it's what your audience have installed (or not) when they open the PDF. From an authoring point of view, rich media is effectively identical between Acrobat 9, X and XI aside from the button being moved to a new panel. If your audience have Adobe Reader X it'll play seamlessly. If they have Reader XI and haven't previously opened any PDF content with Flash inside, they'll be told to download the plugin. At the moment, sound doesn't play at all on mobile version of Adobe Reader.