Deleting files on zip disc

so i have this s3200xl hooked up to a zip disc. i have been messing around with it, and saving samples and what not that i don't really need anymore... how in the hell do you delete samples off of a zip disc? i have a cf card reader for my 2k, that im sure im going to need to hook up to a computer at some point to get ride of shit as well....

In the manual it tells you how to delete from floppy disk or hard disk on pg. 211.
DELETING ITEMS FROM DISK

You can delete a file (or files) from a floppy disk or hard disk. If you have a hard disk fitted, select the volume using the parameter field on the first line. There are a number of options that you can pick to determine what file(s) will be deleted.
CURSOR ITEM ONLY
As its name suggests, deletes only that file which is highlighted by the cursor.

ALL PROGRAMS ONLY
This deletes all programs, but not their associated samples.

ALL SAMPLES
This deletes all samples on the current volume.

ENTIRE VOLUME
This is the most drastic, erasing all data on the volume.

OPERATING SYSTEM
This removes the operating system from the volume.

NOTE: In order to delete a file or files from a floppy disk, removable cartridge or Magneto Optical disk, write-protection must be off, of course.

At any time, press F1 - SAVE - to return to the main SAVE screen.