So just to confirm. If I record something or a sample in Studio One and save it I need to rename it something like...
px-renumber "c:\Users\account\Desktop\02. Drums_Dry Kit.zip" 10?
No, individual samples for the Prophet X are just simple 48kHz WAV files.
BackgroundThe 8Dio Mapping Utility takes these individual samples and maps them to keys, and then exports the result as a .zip file. You get to pick a user bank from a list (such as "u00"), as well as a category (let's say you picked "15 Synth"), type in an Instrument name ("Drums"), type in a Sound Set name ("Dry Kit"), and a directory ("C:\ProphetSamples") which informs the resulting filename like this on Windows:
c:\ProphetSamples\u00\15 Synth\02. Drums_Dry Kit.zip
On macOS it's similar but | is used instead of _ in picking the name. Notice anything? The "02." prefix isn't something you picked, it's what the tool picked for you. It's one part you don't have direct control over though it can be influenced. The tool will try to use the next number in sequence after any files that are already there.
The Problems#1 Sometimes you go through the trouble of doing all the key mapping, export a sound set, and then realize you were planning to add it to an existing collection of sounds and you now have two .zip files with the same number which will overwrite one another on install. Just renaming the file won't solve the problem because the number is actually embedded in the file, it's just there in the filename as a reminder. You could go through the whole mapping and export process again, or you could renumber it with px-renumber.
#2 Someone else prepares a Prophet X sample pack and makes it available, like our VCO Pack. You want to install it but the absolute limit of eight user banks for samples means you run out sooner or later. Wouldn't it be nice to combine the sounds from two sample packs? If they contain the same # in the same category, you can't. They'll overwrite one another. You can't rebuild the .zip file using the Mapping Utility because you don't have the raw WAV files, so you use px-renumber to change one set of sounds to ensure that there's no overlap in the numbering scheme.
Make sense?