Upload the clip to some linkable webspace. Be sure that the space can handle a LOT of bandwidth. At least a Gigabyte or three a day.
Then it's simply a matter of using the VB codes to create a link to where you put it. This is done by putting {url} and {/url} around the URL in the post. Of course you need to use the square [ brackets and not the curly ones.
Myriads