Exactly for your problem naudio has a class called MultiplexingWaveProvider.
Just use the ConnectInputToOutput to connect your right channel to rf and rr and so on. If you call Read or playback the multiplexingwaveprovider you've created, your channels will be mapped automatically.
Just use the ConnectInputToOutput to connect your right channel to rf and rr and so on. If you call Read or playback the multiplexingwaveprovider you've created, your channels will be mapped automatically.