Turn your usb pc speakers in bluetooth usb fm radio speaker
12volts or 5volts FM radio-bluetooth-mp3 board-Aux board:https://www.ebay.com/itm/12V-Car-Bluetooth-4-2-MP3-WMA-Decoder-Board-USB-TF-FM-Radio-Audio-Module-Remote/273550950228?epid=24011691016&hash=item3fb0e83f54:g:~2sAAOSw1zhaX7lx:rk:4:pf:0
12volts or 5volts FM radio-bluetooth-mp3 board-Aux board:https://www.ebay.com/itm/12V-Car-Bluetooth-4-2-MP3-WMA-Decoder-Board-USB-TF-FM-Radio-Audio-Module-Remote/273550950228?epid=24011691016&hash=item3fb0e83f54:g:~2sAAOSw1zhaX7lx:rk:4:pf:0