> I just want people's opinion on whether I should delete the photos or the recordings off my website, because I'm running out of space to add new ones.

Why delete? Why don't you open websites on Geocities or other similar free hosts, moving there all the "photo" and/or "sound files" sections?
After you do this, re-editing all the existing links to point to the new file locations is just a straightforward Search&Replace operation.

AP.