This can be solved using an external program. The Sport does not update the FAT table after the first time - which is why people say they have to copy the entire library everytime they add a folder - you don’t have to do this.
I use FatSort on OS X - works perfectly (Have done this a 100 times.) - once you get it working it takes less than a minute. Every time you add songs or folders run Fat sort and the FAT table will be updated and everything will be in alphabetical order.
Programs like FATSORTER do the same thing on the PC
read this thread - it has info about the Mac and the PC:
