Disclaimer: While I still consider myself a novice, I was surprised how hard it was to try and get answer to what turned out to be such a simple thing.
How to set video player alignment in WordPress page or post using Wordtube with JW FLV MEDIA PLAYER (LongTail Video JW Player)
In the HTML of the page or post add
<div style=”text-align: center;”> before media tag which should look something like this [MEDIA not found] and end with </div>. When completed it should look like this:
<div style=”text-align: center;”>[MEDIA not found]</div>
Note: Replace # with media id, and width and height are adjustable.