Audio sync and scaling

I have two issues (I’m relatively new at this) - first, I’m finding that when I publish my intro, the audio becomes out of sync with the video. I read a few threads on this and there is mention of streaming the audio, but it seems from my publish settings that the audio is already streaming.

Also, when I upload the movie, it immediately takes the monitor size. I want it to be viewed at a smaller size, and I tried specifying in the publishing settings a particular size, but it still adapted to the monitor size.

Can anyone help with either of these issues? I would appreciate some advice.