Not WaveOut will filter this. You have to convert the stream first into mono and then play it.
You can use the SteroToMonoProvider but this will mix both channels together. I don't know whether something like this already exists. If not you will have to write your own provider.
You can use the SteroToMonoProvider but this will mix both channels together. I don't know whether something like this already exists. If not you will have to write your own provider.