Load accounts before starting Engine in sip_audio_session.py

darcs-hash:20090326094839-58103-042a51452a5e316ed6618fa59c2aaa68a7829237
Pass "chat" instead of "message" in SCSessionNewIncoming

darcs-hash:20090326095944-58103-3cf555db96be5e42041e916030d9303f96c4a829