First thing I thought was what the hell is that?
Second thing was how do I get to the audio tracks?
I had these two files;
First thing to do is install some packages;
sudo apt-get install wavpack cuetools shntool libav-tools
Next thing is to split the file into discrete tracks;
cuebreakpoints CDImage.cue | shnsplit -o wv CDImage.wv
Then you simply need to convert the split file to another format.
avconv -i split-track01.wv test.flac
A simple script can be used to do multiple files;
for file in *.wv; do
avconv -i $file $file.flac