If you search the Internet for a HAT (Hardware Attached on Top) that can turn the Raspberry Pi into an FM tuner, this Raspberry Pi receiver is what you need. The assembled version features the Si4731 chip from SiLabs. It provides a complete FM radio with RDS (from antenna input all the way to analogue stereo output as well as digital output ) and is ideal for use in mobile devices.
Another desirable bonus with our HAT is an infrared receiver, enabling you to control the radio with a standard remote-control handset. The receiver handles not only FM in the full worldwide frequency range (from 64 to 108 MHz, meaning that it also covers Japan and certain former Soviet territories) but also AM medium wave (520 to 1710 kHz)
Our FM Radio HAT works with all ‘normal’ versions of the Raspberry Pi from Type 2 onwards; the use of Type 1 is neither supported nor recommended.