In my case I had on my apple Mac-mini Media Server External hard drives, my collection of music all in their respective folders showing also on my networked Windows PC as a list of folders. In each named folder is the list of tracks from 1 to whatever in mp3 or 4 format and a jpg or png of the album artwork.
I had read of issues people were having so I just did the simple method.
I formatted a new SanDisk USB drive 32mb as Fat32 and dragged and copy/paste each of the chosen folders. When I stuck it in slot it showed up in the infotainment as connected USB and when expanding the player, it showed all the albums by artwork cover with all the buttons to control the playback. Every single album has its cover artwork and I have full control from steering column. In terms of all the albums being listed in alphabetical order...for me I have the random play selected as I love all of my music so having to play just one specific album is not important to me especially as I can drive from one end of our island to the other in the time it takes to play 4 or 5 tracks. No Friday afternoon M25 Jnc 19 to 27 car park shenanigans for me anymore.!!!!
Don't know if this will help anyone......