Yes, DriveHQ FTP supports Passive FTP. In fact, usually you have to use Passive FTP to download / upload files if you have a firewall / router.

Please try DriveHQ FileManager 4.0, or any 3rd party FTP client software. DriveHQ FTP server works great with most mainstream FTP client software; but we are not sure about Express Scribe; please check with the vendor directly.