fix error in calling pa_start() with no parameters (gee, I should use -Wall, shouldn't I).
fix error in calling pa_start() with no parameters (gee, I should use -Wall,
shouldn't I).

make initialization start/stop devices, so that we can open mixers.
re-open mixers whenever we call pa_start (in case devices change).


git-svn-id: 9ed0004971709408f906b8bdafa7f98a7bcab630@212 f854266a-e20d-0410-a9be-8852184c940f

zlargon/iaxclient,zlargon/iaxclient,zlargon/iaxclient,zlargon/iaxclient,zlargon/iaxclient