STEP TWO: Get the YouTube video embed code for the video you want to display in your sidebar, the code will look something like this:
<iframe width="640" height="480" src="http://www.youtube.com/embed/IbCTrZjnhbk?hl=en&fs=1" frameborder="0" allowfullscreen></iframe>
STEP THREE: Go here -- TOOLS 4 NOOBS -- http://www.tools4noobs.com/online_tools/youtube_xhtml/
-- and paste your YouTube iframe code for the video you want in your sidebar, into the TOOLS 4 NOOBS window, select your parameters, and GENERATE the XHTML code, which appears below...
Further below on the TOOLS 4 NOOBS page is a live working example of your video, so you can then adjust it any way you want until you get what you need.
STEP FOUR: Go to your DASHBOARD. Look for WIDGETS in the left-hand menu, it's probably the second item in the left-hand menu under APPEARANCE. Click on it.
FINALLY: Check your WordPress page, and the video will be displayed in your sidebar.
THIS IS THE RESULT OF 15 HOURS OF plugging and unplugging stupid video plugins that don't work to put a single video in the sidebar!
Now, would somebody charitable please invent a SIMPLE CODE to embed a SINGLE LOCAL VIDEO in the sidebar!!!!!! For those of us who don't want to use YouTube, and prefer to host our own videos !!!!