Receiving Errors because of a plugin

I just installed a new plugin called WPvideo .60 (works with 2.0 I have 2.02
“Allows you to insert online videos in your post by providing the video url between the <video> tags. Also allows download the video (using Videodownloader) with a link below the video.”
After installing this plugin I started receiving errors on my wordpress such as these
when i go to write – post i get these errors under the text box
Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-admin/inline-uploading.php on line 5

Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-admin/inline-uploading.php on line 140

When I press publish I get this error
Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-admin/post.php on line 60

when i delete a post i get this
Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-admin/post.php on line 154

when I press update my profile
Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-includes/pluggable-functions.php on line 247

when i go to register
Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-register.php on line 9

login
Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-login.php on line 9

i pretty much get these errors on most pages in the admin
it still does everything but i get these errors and cannot login to the admin if i lose firefox i just get this error

Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-login.php on line 9

Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-includes/pluggable-functions.php on line 274

Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-includes/pluggable-functions.php on line 275

Warning: Cannot modify header information – headers already sent by (output started at /home/facethem/public_html/wp-content/plugins/wpvideo.php:1) in /home/facethem/public_html/wp-includes/pluggable-functions.php on line 247

something isnt right i havent edited any wordpress files except my theme, but when i changed the theme to default i still got these errors
i have another plugin thats enabled and thats the adsense deluxe plugin .7 works with 2.0
i uploaded the wpvideo plugin https://xdamiancx.home.comcast.net/Desktop.zip
this is line 1 of wpvideo
<?php
does anyone know what could be wrong?
I have contacted the maker of the wpvideo plugin he told me “Seems that line 1 of wpvideo generate output to browser…
Have you edit wpvideo.php?. If you know php, you can give an eye to the code on first line… perhaps you can find something.”
I have not found anything wrong with line 1
does anyone know what could be the problem?