Are these IFO files from encrypted (protected) DVD files? The VOBs have the actual video in them, and commercial DVDs are all encrypted. Are these just raw copies of DVDs, or were they "ripped" with a program to remove the encryption?
If they are encrypted, I believe the answer is "no", they won't play. They play on Windows because of a helper application that decrypts the DVD content. This helper does not exist on Mac or Linux as far as I know.
If you only have a handful of these, you can easily convert them to MKV files, and strip out the encryption using MakeMKV. You'll of course have to run MakeMKV on windows or mac to convert the files. Then move the converted files back to the ID.
Brian.