Well that was a labour of love! Anybody wanting to organise their USBs should have the necessary resources now - until Toyota change the technology! Pleased you got it sorted but looking at your screenshots - are you playing your whole collection in order?
I was happy just to get my albums in order. I'm reminded of a mate who, back in the 70s, used to fetch 12 cassettes from his collection into his Hillman Hunter, play them in whatever order they happened to be in the box (I think he had them all alphabetically ordered), and when he'd got through them he'd take them back in the house, get another 12, and repeat. His reasoning was that it was all his music, he liked it all, so it didn't matter what order it was in. I can't relate to that, I like to choose what I'm in the mood to listen to.
Now I think about it, he's much the same now, he loads the autochanger in his Merc up with CDs and just plays them. He had some dreadful cacophony on the other day (we take it in turns to drive to the footy),it sounded like a pack of angry dogs knocking over dustbins, nobody liked it, but he wouldn't put anything else on or even fast forward because he said the next track would be better. It was, but that's not the point. His music is organised into albums, though.
I wish I'd had all this technology back in the 70s - it would have rendered the arcane art of making party tapes so much easier....