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If I recall, HJSplit is Java based. Havent used it in awhile though.

i've attempted hunting down a way to use hjsplit on mac, and i haven't turned up any results.

perhaps using a good old fashioned flash drive, take the split files to a windows, converge em, than drag em back?
its a hassle, yeah, but i havent been able to find another way.
 
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