Side topic:

Anyone have suggestions for an inexpensive bluetooth receiver or speaker, which shows track titles, that I can use for bench testing? So I don't have to keep sitting in the car to test this?

I don't necessarily want a big stereo receiver, I'm looking for something smaller. But there doesn't really seem to be much out there.

I have considered getting a car or marine unit and powering it with a 12v adapter. Something maybe like this:
Dual MGH30BT marine player - which I have confirmed with video does in fact display track titles... Some of the devices out there aren't very clear in their product specs as to whether or not they display track titles. For instance, the manual for that MGH30BT didn't say, and I had to search youtube for it.

Any other ideas or suggestions, perhaps a portable speaker with BT track titles on an LCD display? I can't seem to find one but I know they must exist.