I sort of both auditioned and submitted.
I sent in the audition tape for Aang to paramount in LA, and that was technically considered an audition.
After I sent it, I became unhappy with how it turned out
(I was very rushed for time, I made the video
really quickly and memorized the side like right before I shot it, and instead of an 8 by 10 head shot, I sent in a standard size photo, plus it was from dec 07, so it wasn't that recent)
Anyways, after I sent it in and realized how aweful my submission was, I decided to submit to the vineyard, and I did, with a recent headshot, resume and letter.