Rewind. can i rewind and record over using DS 30?

THe RS 25 pedal works with the Ds 4000 as a hands free device allowing you to operate the play / rewind / record functions with your foot

sometimes formatting will reset the file number... format through the recorder..

you will need drive letter assignment for your device... located in control panel, disk management

Unfortunately with this recorder, if he hits the stop button and rewinds it will go back to the beginning of the file. He may want to look at our DS-2300 or DS-2400 recorders as they both have a feature on them of a NEW button which will allow him to stay in the same file until he presses NEW to create the next recording.

Unfortunately with this device the VN-2100PC it is not possible to rewind and overwrite any dictations that were done. Each time the record button is pressed and then the stop button is pressed it will create a new file. They may want to look for a DS-2300 or a DS-2400 recorder as these devices have the ability to rewind and allow you to dictate over previously recorded information in the same file. There is a button on these devices called "New" that allows you to stay within the same file until you press New to start the next audio file.

format the recorder through the recorder menu. but they are system files that will not be deleted. they are used by the recorder.

I don't think the serial number is required to install the software. I didn't see DS-30 information on the Olympus website. DS-40 was the closest one. No information was availbable regarding serial numbers.

I have a VN-4100PC and don't recall being asked for a serial number. The software is the same thing for all Olympus players.

you can not do this with the Olympus ws-100, you need a dictation machine that has the editing function which allows you to easily insert, overwrite, partially erase files and continue on the same file, most of the digital dictation units have NEW FILE BUTTON , you will stay recording on the same file till you press new.
Look at Olympus DS-2300. Olympus DS-33300 or ds-4000.

DS-30 manual you can find it here
You can use any standard USB cable for the DS-30 any radio shack store carry it,