What you see may be the DLNA client (?). I notice that what I see on my AVR with Twonky is different when I had an usb3 drive connected to the router which has a DLNA server. Twonky sends much more categories of music than the DLNA.
I use FreeRip to rip my CDs to the hard disk as flac; now doing it to the usb3 Hitachi connected to the computer as my MBL is “dead” as in it now only works as a hard disk.
I see that FreeRip uses the track number as part of the title but not sure but did see stuff in alpha order when using DLNA but looking at the command prompt, the track number is still part of the filename with a dash between the number & name.
The latest FreeRip does have a slight problem in that when changing the album title, one must press the enter key else the change doesn’t propergate to the tracks info. I’ve also had the output as: album title/artist/track num-track title.ext; guess that’s why the track number is part of the filename & plays as the track is sequenced.
Hindsight says just include the track num as part of the outputted file name!