Fixed typo in WaveFile.start

Ignore-this: 32fc29ed856c7dbd6a0cd150e7cd6ebd

darcs-hash:20090720122647-1e3d8-fd4fce2aff2f6e256aa73b8efd1cf0e75a90f428
Fixed fallback of audio devices in SIPApplication

Ignore-this: 6429753329feb390193312bac2bd7ae8

darcs-hash:20090720131257-1e3d8-3bb18cccd897989af7225c15902f6a6f47f26cd4