Thank you for providing your state name.
Did the website have a Terms and Conditions of Use which included the grant of a perpetual license to all content?
The original site's ToS states:
9. Your content: licence
9.1 In these terms and conditions, "your content" means all works and materials (including without limitation text, graphics, images, audio material, video material, audio-visual material, scripts, software and files) that you submit to us or our website for storage or publication on, processing by, or transmission via, our website.
9.2 You grant to us a worldwide, irrevocable, non-exclusive, royalty-free licence to use, reproduce, store, adapt, publish, translate and distribute your content in any existing or future media / reproduce, store and publish your content on and in relation to this website and any successor website / reproduce, store and, with your specific consent, publish your content on and in relation to this website.
9.3 You grant to us the right to sub-license the rights licensed under Section 9.2.
9.4 You grant to us the right to bring an action for infringement of the rights licensed under Section 9.2.
9.5 You hereby waive all your moral rights in your content to the maximum extent permitted by applicable law; and you warrant and represent that all other moral rights in your content have been waived to the maximum extent permitted by applicable law.
9.6 You may edit your content to the extent permitted using the editing functionality made available on our website.
9.7 Without prejudice to our other rights under these terms and conditions, if you breach any provision of these terms and conditions in any way, or if we reasonably suspect that you have breached these terms and conditions in any way, we may delete, unpublish or edit any or all of your content.
A reasonable concern.
Do you have a question?
Do you have reason to believe that the owner(s) of the work(s) in question would give you a license do what you are proposing to do? Have you contacted the owner(s) to ask?
I currently have no way to contact the previous site's owner. He has "gone dark" from all of our discussion platforms. But the sole moderator for the site is making vague threats regarding anyone re-hosting the art/stories, and so I feel that it is best to be forearmed before letting our new site go public.
If you haven't had the joy of dealing with artists and authors yet, just know that absolutely everything has to be done
dramatically.
EDIT: Some of the artists in question are already invited to the new site and approve of the direction in which we're going.
They simply want a place to post their artwork and stories.
And clarification, please: Do you (or your “community”) want to take over the website itself (domain name, web design, site name, etc) or do you want to set up your own website using content published on the old website?
Nobody was allowed a chance to step up and take on the duties involved in keeping the website online. The plug was pulled on it in the middle of the night. The site owner is nowhere to be found. Because of this I have taken the initiative to set up a new website using a more modern software than the previous one.
EDIT: I realized that I hadn't properly answered your question.
Yes, there are some among us that would have taken on that task if we had been given the opportunity.