ftp://ftp.saintjoe.edu/pub/linux/slackware/slackware-current/source/ap/sox/  direct

710 B  2001-03-23slack-desc  1886+ mirrors
751.27 KB  2008-11-08sox-14.2.0.tar.bz2  55 mirrors
2.77 KB  2009-05-07sox.SlackBuild  70 mirrors