I have an RCA projector model RPJ129 that we use for outdoor theater. I'd like to be able to direct the sound to a Bluetooth speaker in between us rather than setting up a speaker right at the projector. Basically so as not to blast the sound all over the neighborhood. I know there is an adaptor but how will it allow me to select the device (speaker)? Will it show up on the projector screen. Obviously I can't select it on the speaker.