set host IP

Hi,
streamwhatyouhear is absolutely great and is exactly, what I was looking for months. I have several roku soundbridges, which work fine together with streamwhatyouhear. The only problem I have is, that streamwhatyouhear obviously greps the IP of the first available network card on my computer. Unfortunaltey, this IP is not the IP of the ethernet card but of the virtual box network. I have to disable the virtual box network to get streamwhatyouhear to stream to the correct eth network interface. Is there a way to set the streaming IP somewhere as preference ?