Need advice/help

[◄Chuck►]

The fact the connectors somehow fit doesn't make it work as you expect lol.
It might be helpful to know what other options you have before deciding for a solution. Like, do you insist using a USB stick? Other options are to use SD cards or play from a device having own storage, i.e. phone or mp3 player.

If you don't have any of that "modern" stuff, you could do as herjoe mentioned. There is a wide range of so-called FM transmitters. https://www.amazon.de/FM-Transmitter/b?i...=617059011

These things can either play from a locally inserted storage, like an SD card, or relay what it got from your phone. They don't need no aux as they simply send their output as FM radio signal. So, you have to start your radio and tune-in your own "station".