A:AnswerYes you can you can. If headphone jack is available on your devices you can use and aux cord and connect it from the sound bar to the projector. Depending on the projector and or sound bar, you may be able to do it Bluetooth as well. Hope this helped.
A:AnswerSorry, it's impossible to mirror content on Netflix and HBO from your phone to the projector since all content on those streaming services is classified by the HDCP protocol. To stream them, you will have to plug a TV stick into the projector.