The abc.py module implements a Docutils directive that accepts content written in the ABC language for musical notation (http://www.gre.ac.uk/~c.walshaw/abc/). The directive relies on a number of libraries and external tools. Requirements: * abcm2ps (http://moinejf.free.fr/), which turns ABC into PostScript. * Ghostscript (http://www.cs.wisc.edu/~ghost/), which turns PostScript into PNG files. * The Python Imaging Library (used to crop the PNG files by removing lots of blank space). Images are converted to PNGs and written to the document output directory. --amk