Is it possible to play the embedded FM radio (real radio, not webradio)
without having the sound comoe through the earbuds or whatever is
plugged in?

For the first time in 10 weeks, the internet signal has gotten spotty,
for an hour or two so far.

Up until now I've spent hours with no trouble playing Tune-in via the
phone on a JBL Charge 3, a portable rechargeable bluetooth speaker about
as big as a bologna or midget salami.

Since the internet is weak, I thought I'd try the radio, but for an
antenna, I have to plug in something, earbuds?**, but then all the sound
comes out of the buds, even though Settings / Connections says that I'm
currently connected for calls and audio. How can I get around this,
get the sound to come via bluetooth?

**What if for an antenna I used something like earbuds but with the buds
cut off. Would the radio still be satisified to use the remaining wires
as an antenna, while the output decided would not think there were buds,
etc. plugged in, and so it would let the bluetooth transmit?