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What exactly do you mean by a "broadcast WAV file"?
A .wav file is a .wav file is a .wav file is a .wav file..... :-)
That is, any file which has the extension .wav can be converted to an mp3 file by any number of programs, including NCH's Switch or NCH's WavePad, as another example, etc., etc., etc., ad infinitum.
There is _no such file as a BWF file_. So you can safely forget about something that does not exist!
In other words, what is your problem here?
Musikone