A new actor system should not be created here.  It's going to use the same configuration as the Play one, which means if you turn on remoting in the Play one, it will turn it on here too, and both will try to listen on the same port, and Play will blow up.  Also, this actor system never gets shutdown, so there's a resource leak here.

Instead, use the Play AkkaPlugin to get an actor system to get an execution context.