Fixed typo in sip_audio_session command-line option name

Ignore-this: f22ed1c00e113f84f713173435c56df1

darcs-hash:20090327120653-1e3d8-01f44be431d4926b461e10b0d8a71922510ac80c
Adapted sip_session to the modified Logger

Ignore-this: a0cbb55fee71461acdf62527c217f4d

darcs-hash:20090327121631-1e3d8-4049d304464382ed53d4a56b8e6b610150efe773