^^^^ exactly what the man says!
Organised mine in alphabetical order first by "Artis", example being ACDC is first, Bryan Adams next etc etc
Then in "Artist" by Album in alphabetical order or chronological order (my choice) , easier to find, for example we have 10 albums by Bryan Adams alone (my wife's BTW)
Then by track as per the Album.
Not to hard to arrange on your computer onto your SDHD card, just takes time. Get a decent card and off you go, then download onto your hard drive.
EDIT need to be turned into MP3's in iTunes, there's a how to somewhere, probably in the Audio section on here. Will have a look for you.