There are no free lunches.
Wireless speakers require a home network or a mobile WiFi.
Bluetooth speakers require a device like an IP (a hand held phone with Internet connection...Idiot Panel).
Whether wireless or Bluetooth you have to pay a company for the service (over-the-air transmission to mobile devices).
In the USA, it is free to receive AM (540 to 170Khz) and FM (88 to 108Mhz) signals.
They are free to receive but we have to suffer listening to the terrible commercials which pays the bills of the radio station.
