How do you convert a garageband file into an mp3 from a PC?

Answer:
You will need a Mac to open a Garageband file. There is no PC (Windows) version. From the Mac, choose Share-> Send to iTunes. The song will then be mixed down and converted to an MP3 file if the conversion settings in iTunes preferences are selected to make MP3 files.
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Contributor: Cedarparkdesign
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