Okay guys, to those (like me) who wanted owner commands but couldn't figure it out, well... I did.
Step 1: Go to wherever you saved the client and source and search "Characters".
Step 2: Go into that folder, and find the save "chris". Open it up (if its not a .txt file already, open it with notepad.
Step 3: Inside the file, look for "password" (no quotes).If for some reason you can't find it, use Ctrl+F.
Step 4: You'll see a whole lot of random numbers. That's okay, its just a MD5 hash (or so I beleive). Delete them all, but ONLY the numbers, nothing else in the file. Save.
Step 5: Use the username "chris" (yes, no caps on the c) and log in with any password you want.
Hope I helped!
P.S. No, you cant change the username (well, you can, but you wont have the owner commands XD)