When I had trailers on my site (I don't do them anymore), I only put in links to them. I used Apple, www.apple.com/trailers, which has/had a good selection of them. My hosting service has me on a very economical plan that gives me more than enough bandwidth for static pages. If I fed the trailers myself, My site cost would go up pretty fast.
I stopped putting up trailer links when it appeared I'd need more than a couple of 'em to cover the different computers out there. Quicktime also was pushing Itunes real hard, packaging it with the viewer software. I didn't care to be involved with that, so I just stopped.
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