Well, it all seems kinda shady like a back room deal or something, but I got an email from tha Virginia State Government person today telling me that Arlington County's YouTube account had been upgraded to "Partner" status. I didn't even have do anything since my previous posting where I said I would apply - I guess she just emailed her contact at YouTube and got it done for me. That's great, but at the same time it seems weird that it works that way.
So, now I'm working to design the banner and logos and such that I can add to our page - there's a new section on the Account Management page for "Branding Options." Hopefully I can get something thrown together and put up there soon. The other awesome benefit (in addition to that auto-play that started this whole thing, of course) of being a partner is an increase in the max upload. As a partner, I'm still limited to 1044 MB per video, but there isn't a time restriction.