xACT stands for X Audio Compression Toolkit. It is a GUI based front end (written in AppleScript Studio) for the unix applications Shorten (3.5.1), shntool (2.0.3), monkey's audio compressor (3.99),flac (1.1.1) and cdda2wav 2.01a32(with paranoia support). It also uses a modified md5sum (modified from 2.1 textutils) and sox (12.17.7). It does the basic commands of these applications and adds a few features to speed up productivity in creation of etree.org standard filesets.