Slide.com provides html embed code that you can place in your post, but only from the “Code” entry format (not “Visual,” the rich-text WYSISYG format). The process is identical to how you’d embed a YouTube video. I had posted many slide.com shows into my Blogger blog. When I imported them to WP, they came through fine. However, when I try to embed into a new WP post, the slideshow always centers across my page and the image spills over onto my sidebar. Maybe it’s because I’m using K2. I haven’t tried with a different theme yet.
Be careful if you ever go to edit the page and have the rich-text editor on. WP has writes and edits default to “Visual” which will make your embed code go bye-bye.