If you download cocoafibs 0.5 and get the message that the beta has expired, just open CocoaFIBS with a hex editor ( i.e. http://hexedit.sourceforge.net/ ). Find the two hex instances of "32 30 30 37" and replace the string with "32 30 39 39". This will keep the program running until 2099.
[Version 0.5]
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CocoaFIBS