The mod .jar version from curseforge which is linked to in the Readme contains a bug where when you call component.openfm_radio.setVol(1.0) it throws the error, that it cannot cast from double to float. This bug looks fixed in the github source, but I am unable to compile the source.
I kindly ask to update the version that is available on curseforge with this source code and at least fix this error (:
Best regards,
Viktor