PowerPress player overlapping with post image

I’m using PowerPress to display an audio player in my blog posts. I like to have images floating to the right of my posts, but if there’s not enough text to push the player down the page past the image the player will overlap with the image. I believe this could be fixed by clearing the image float, but I don’t know where to put the code (or if that is even really a likely solution).

Here’s an example: http://werjco.com/scrambledbrains/2013/11/19/scrambled-brains-presents-the-spoilers-thor-the-dark-world/

I’m using the Twenty Twelve theme, if that helps.

Thanks.