Sorting MP3s on a USB Stick

I have a Pioneer MVH-X175UI Car Stereo which uses a USB stick for its MP3 playlist. I am trying to find a way to sort the playlist in the order I want it played. I have them numbered with a numerical prefix at the start of each filename, e.g.....

010 - Jackie Blue.mp3
020 - Beds are Burning.mp3
030 - Rock the Casbah.mp3
040 - Copperhead Road.mp3

.... and the songs play in that order fine. Its when I add an MP3 that the problems start. If I add...

015 - Babylon Sisters.mp3,

...it plays the added song at the end, and not between 010 and 020.

Now, I suspect that the stereo is determining the play order by reading either the USB's VTOC (volume table of contents) or the VTOC index. Of course, re-sorting in Windows does nothing because that is only a display sort... Windows does not "write" the sort order onto the USB Stick.

I have tried using the batch rename tool in ACDSee Pro to rename/reorder all the files, but while that does write new names on the USB Stick, it does not change the order of the file names in the VTOC; the added song still plays at the end.

The only way I can get it to work is to copy all the MP3s off the USB stick into a folder, reformat the USB stick and copy the MP3s back onto it one at a time. That might be OK for just a few MPs, but it becomes a tedious task with a lot of MP3s (100+) to copy.

Is VTOC really the problem here?

If so, does anyone know of a simple way to re-sort it?

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