Fixed AudioStream to work when the AudioTransport needs to be restarted

Ignore-this: e02697c889fcebfd03d2cb92f47094cb

darcs-hash:20100312183052-1e3d8-f0a9ff5643695833b70075b818b8eecca73299f5
Fixed setting remote_rtp_port_ice in RTPTransport

Ignore-this: f8dd30404eaf3b30d96208cae5b02856

darcs-hash:20100312191648-1e3d8-2e388f9934e73202605b3f985bbc0001a10eca9f