We do not have a download file for the latest version (1.3.0), but you can try downloading it from the developer's site
Download version 1.2.0.68361 from Mac Informer
Version: 1.2.0.68361
Date update: Mar 11, 2013
File name: asperacargodownloader-1.2.0.68361-1.dmg
Size: 14.9 MB