I use my phone as an mp3 player, and I have the music folder and download folder on our desktop pc shared on the home network.
when I want to put music on the phone, I use es file explorer to copy music from the shared folder to the sd card. sometimes files don't copy in alpha-numeric order, I think it happens when there's a wider variation in file sizes in the folder. the sd card is formatted in FAT (exfat, I think), which indexes files in order of creation.
if the files have been copied and indexed out of order, music player apps will then play them in that order, regardless of what the track numbers in the metadata says. this is an old problem that's been plaguing digital music fans for years.
it's relatively easy to fix, by just cutting and pasting the files into another folder on the sd card, where they are re-indexed into alpha-numeric order.
is there a way to stop it happening to start with, either at the phone end or on the pc (linux mint 17)? I'd assume that formatting the sd card in a different file system would just cause me problems, can I force es file explorer to copy the files in order? or is there a different file manager that will? or would sharing the files via ftp instead of smb sort it out?