ok, all done.....but i don't ear sounds ( exept default radio sounds).
i think that files are now in right format (like you have posted).
maybe a make some errors building mission and or chosing channels?
i create a mission in FMB putting in radio object (Radio_rome).
so i put into radio rome folder the audio files (for make good test i've downloaded your files too).
in flight i switch to radio rome channel, but i didn't hear sounds (except the noise default radio noise!)
where is my error???
naturally i've put the files in radio_rome folder, under music section
