The .dct file is proprietary to NCH and can only be generated by their software products. All of the digital handheld dictation recorders use a file format that is proprietary to the manufacturer of the device or a coalition that they belong to. Some devices may offer .mp3 as a second choice but I don't know of any that offer a .dct option. Unless NCH has recently convinced one of the device manufacturers to include .dct as an option, the only place to generate .dct files is on a Win/OSX workstation or the Iphone. If you must use a handheld device other than an Iphone, you will probably end up with file type .dvf/.mvf from Sony or .dss/.ds2 from most everyone else.