GObject BtApplication BtSettings BtGConfSettings BtPlainfileSettings BtMachine BtProcessorMachine BtSinkMachine BtSourceMachine BtPattern BtSequence BtSetup BtSong BtSongInfo BtSongIO BtSongIONative BtSongIONativeBZT BtSongIONativeXML BtWave BtWavelevel BtWavetable BtWire BtWirePattern