How to avoid videos being cached

Question

Hello Friends, I've a gridview in that gridview i've taken a commmand named "Play" for playing different-different songs and songs name are unique as well. Its working fine in the browser "Flock" and caching those videos in Internet Explorer. Can anybody suggest me the way here i'm giving the link where i've uploaded it. http://www.saamstesting.com/Admin/VideoUpload.aspx[^]