Youku thumbnail not working

Hi,

Thanks for the effort to make this module. I installed media_youku yesterday, however it can't get the image thumbnail from youku. Also, after doing a bit research in the code, I found that every time each thumbnail is displayed, it issues a 'file_get_contents' request fetching a web page from youku. So if there's 50 thumbnails is displayed, the server will connect youku 50 times.
I've made a patch to fix these two issues. Please help to test, Thanks!

Andy
http://drupaler.cn