Key binds, audio and ESC mode

Key binds can be changed in Settings > Key Bindings > FiveM > Anything with "sonoranradio"

Audio settings can be accessed by clicking the gear icon on the bottom right of the radio screen. (If you don't know how to focus the radio, press F7 or whatever your key bind for the radio is.)

ESC mode, is what the radio will do when you press ESC. To change this, press the gear icon on the bottom right of the radio screen, then the FiveM icon on the top. Then scroll down until you see ESC mode, and click it until you get to the setting you want. (If you don't know how to focus the radio, press F7 or whatever your key bind for the radio is.)