Your song is amazing, I was going to vote for it, but I saw that you double-post it.

You can see it here: @charlocked/posts.

You can write the post in the same 3Speak post. What you could do is to write all the text, images, markdown, and HTML in a PeakD draft, then copy all of it and paste it into the description of the 3Sepak video. Then you will have all in the same post and will be eligible for 3Speak votes.