[Total Noob]

I have old and new devices that only have analog output good for wired headphones.

Is there an android app that will do aux in from my tv or old stereo through the one jack it has and then put the incoming audio back out as bluetooth so I can use my wireless headphones?

At one time I had a device that captured analog audio and put it back out as an FM signal useful only with accompanying FM headphones, but the results were awful; there was too much background interference.

Thanks.