ABC on GitHub
In particular, I've made the abcm2ps repo with 2 branches: 'dev' & 'fmt'. 'dev' holds the code for the development release of abcm2ps, while 'fmt' includes the stable release along with the formatting files, including the ones from Hudson Lacerda's site.
I'm willing to add whomever I need to to each individual repository for them to commit to the code. I've included the LICENSE and README files as given; I've only had to modify some of them for markdown. Their content remains the same.
To reach me, my email is laughingman182 (at) yahoo (dot) com, and the link to my GitHub repos is github.com/laughingman182/.