I have a Sony HTXT1 soundbar. It is connected via HDMI. The soundbar does have bluetooth functionality, but I believe this functionality is input only, rather than output. Is there any way I can buy an additional speaker (ideally wireless of some sort) and the audio play through the soundbar AND the additional speaker at the same time (in sync)? I can't think of a way to do it since the TV sound does not play at the same time as the soundbar...so, it tracks that anything plugged into the TV would not play at the same time, and I think if I plug something into the headphone jack of the soundbar, the sound then won't go through the soundbar either. Is my only option really to get a whole different soundbar? Thank you.