Fixed SIPApplication after rename of default audio device

Ignore-this: 1f060baa0851e7a9a8a79213c1a8bd92

darcs-hash:20090825123126-1e3d8-9988b92c023cbf87a507e9cf225c81509135e0f9
Fixed AudioStream to not access removed ice section

Ignore-this: c085dead4b0336b98c21378e2d47130d

darcs-hash:20090825143723-1e3d8-e6184cedfd84e118201ee028b15064d631ccac07