Host can I host a file on a CDN?

I like/use Amazon Cloudfront. Do you know this size of the plugin and your estimated downloads? Both Rackspace and Amazon will get the job done. You just have to decide on price and which system you want to depend on.

Rackspace Cloud (CloudFiles) is what I use. I highly recommend it:

http://www.rackspacecloud.com/cloud_hosting_products/files

Thanks looking into it

Amazon's Cloudfront or Amazon S3 would probably work for you. http://aws.amazon.com/cloudfront

Have you used it before?

Cloudfront works great