If you can covert than Medieval Cue Splitter should split it for you.
Some people said it may be that the .wav extension had to be replaced with .tta
I tried converting it with dbpoweramp, which worked out pretty fine, although the tracks weren't split.
Alternatively you can convert the tta file to wav with dbpa, drag the unedited "wav" cue sheet to a foobar playlist, and convert the cue tracks to FLAC.
It should work on foobar if you have a working TrueAudio decoder component installed and if foobar supports tta + cue. (I have never tested that combination)