#!/bin/bash

curl "https://sourceforge.net/projects/sox/files/sox/" 2> /dev/null | \
  tr "\"" "\n" | \
  grep "^/projects/sox/files/sox/.*/\$" | \
  sed "s|^/projects/sox/files/sox/\(.*\)/\$|\1|" | \
  sort -V | \
  tail -n1