Most "fixed" versions guide you to the Settings > Audio > Method menu. For many devices, switching this to Digital Auto or Galaxy S3/S4 presets fixes silent playback.
you download the app from the Google Play Store. and you plug in your wired. headphones. you then choose a local FM radio station. YouTube·Radio.co Spirit 2 free / open - F-Droid spirit 2 fm radio apk fixed
To understand why a fixed APK is necessary, it helps to understand how Spirit2 works under the hood. Most "fixed" versions guide you to the Settings