We are hiring a new server admin! Click here to see job details on our forum.
In the DOSBox .conf file, under the [joystick] section, set timing=false.
In Windows' Settings or Control Panel, remove any other controllers and set the joystick as the preferred device.
This will disable the cutscene speech in the CD-ROM (including GOG.com) edition and enable captions (like the floppy version had).