Hi,
here is two versions for OSX
http://tmkk.pv.land.to/xld/index_e.html
scroll down to Download and get the “X Lossless Decoder(XLD)”
http://xld.googlecode.com/files/xld-gui-20111015.tar.bz2
also for PC
http://www.yohng.com/software/cuewavextract.html
hope it helps
regards S-EH