Whenever a third party is going to upload your content (or artwork) for you, they would follow one of these links to attach their files to your order.
Note: The anonymous uploader will require your project's Quote Number. This can be found near the upper right corner of your quote. If you have trouble finding it, contact your Client Advisor.
For artwork: http://upload.oasiscd.com/Artwork
For content: http://upload.oasiscd.com/Content