Removed _sound prefix from sound settings

Ignore-this: 6d627ba6a00715accce98bca38676e52

darcs-hash:20090817074154-1e3d8-f3c48a4ea09d26839fbf3b349a744c9704ba7b74
Removed sip.ignore_missing_ack general setting

Ignore-this: b69325a08f89a2522daead5e67e28b26

darcs-hash:20090817075616-1e3d8-f43e40dae0cf33682ab0e998937d82460dfc9513