The monofonIC code is available at https://bitbucket.org/ohahn/monofonic/src/master/ . However, for our tests, we use the experimental version (only available through admission from Oliver Hahn, ohahn) from https://bitbucket.org/ohahn/monofonic-experimental/src/master/ . The branch newrandom is the one holding all desired code.
To change the Daubechies wavelet in question, go to line 146 of /src/plugins/random_music2.cc and spell out the desired wavelet there. Only exception: to change to the exact solution (the shannon wavelet), change line 258 to '#if 0'.