I'm around. I occasionally catch Raw, but that's about it. Now that Bryan and Punk are out of the title picture and the focus is on Cena and Orton (AGAIN), it's just not that interesting.
I've been playing a lot of WWE '14, though. It's fantastic.
Regarding themes.. I don't know of any site that regularly posts themes anymore. As someone suggested, using Youtube to find a theme then converting it through a site seems to be the way to go. The only additional step I took after using a site to get a theme was running it through Audacity and changing a few things to give it that arena echo that they started adding since '12. Some people on YouTube are uploading themes with arena effects already applied to them, like
http://www.youtube.com/watch?v=QbciWWb8hGw for Primo and Epico Los Matadores. Here's a good one for Goldberg, because, I agree, his WWE theme is terrible
http://www.youtube.com/watch?v=dda7MlCPRkM. On YouTube, just search for "(wrestler) theme arena effect".