Added statistics property to AudioStream

Ignore-this: af6c8901bec0e6c0c6a2a7dcf8648e7b

darcs-hash:20090720152134-1e3d8-54e2fca094f969ecbfa4a40451a190c3edfce4c4
Fixed sending of recording notifications in AudioStream

Ignore-this: dac6a1d05b7d8db1f25ffd13a39ac754

darcs-hash:20090720152228-1e3d8-54bdd74763a186729ab72f9d5f10c4bf4e9fbe7f