The soundquality of the preview is pristine, but the preview seems to lack any actual 'loading disk' sounds? Other packs tend to also include some stepper motor sounds or other simulated sounds that have the 'loading a disk' vibe.
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You're right, there aren't any sounds where the disk reader is powered on and loading disk content – the disk drive was an old Amiga device that pre-dates USB so I wasn't able to plug it in and power it up. This is a good suggestion though. I do have hard disk reading sounds in the Future UI library but the character would probably be a little different.