Red5 audio options should be off by default.

[GoogleCodeExporter]

Audio options in the Red5 window should be off by default. This applies to
both sharing and receiving.  

For conferences and classes using Blindside, audio is normally provided by
Asterisk.  Multiple audio options could be confusing for some users.  

There may be a use-case where a passive (listening-only) user would want
audio streamed directly without the need to establish a VoIP call.  If so,
this would be a future enhancement.

Original issue reported on code.google.com by s.mue...@gmail.com on 5 Nov 2007 at 7:11