There isn't one for members.
You need uploader status before you can upload here (ordinary members can't upload). If it's granted an "upload" button appears on the index page.
You need to contact a mod, tell them what you want to upload and give them full details (videos, audio etc) of what you have, where you got it (live recording, access to source, copied from a CD and so on) but first to make sure that it isn't anything that is commercially available or contains anything that is.
You could post details in the forum and we could tell you if it's worth going ahead.
Much of the park audio is commercially available and that's why it isn't here already and videos need to be of a certain quality or unusual/rare to be uploaded.