initial pass at settings in the domain-server passed down to audio-mixer

Yep, will add array types to settings next so we can pass multiple.

On Fri, Jun 27, 2014 at 9:19 AM, Philip Rosedale <notifications@github.com>
wrote:

>>          
>> -        qDebug() << "There is an unattenuated zone with source center at"
>> +        QString unattenuatedZoneString = audioGroupObject[UNATTENUATED_ZONE_KEY].toString();
> So at present this allow for only one attentuation zone per audio mixer?
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