FTR Player issue

Maybe somebody else has some ideas but from browsing the web it looks like FTR is pretty strictly a PC-only format. It is pretty specific in its use for court records so it doesn't surprise me there aren't alternatives. One web site said for people on Macs the court could provide CDs instead, confirming the lack of any Mac alternatives.

If you're running an Intel Mac you could investigate installing Windows and running it from there.

This doesn't really solve the compatibility issue, but if you have an old fashioned CD-walkman you could record them into garageband in real time (while you're doing other things - just set a timer) and then send them to iTunes. You'll need a stereo mini to mini cable, run from the headphone out of the CD player to the mike/aux in on your computer, and you'll need to tell GB to use the audio line in instead of the built in mike (Garage Band/Preferences/Audio-MIDI/audio input:change driver? Yes.)The signal loss/noise problem this way is minimal since you're going from digital to digital even though you're using an analog method of dubbing.
Of course you could listen to them using the walkman also, but I'm assuming you want to use your computer to archive them rewind/replay etc...