The dropdown doesn't work in the editor so I use shortcodes.
I have the plugin set up on a test site with only one other plugin and that is Ultimate TinyMCE. But even with that deactivated the dropdown doesn't work. Nothing happens when I click on it.
I am using the latest release of WordPress 3.6 with the Twenty-Twelve theme. I have tried using it with the Twenty-Thirteen theme but that didn't work either. (On the Twenty-Thirteen theme, the volume slider also doesn't work. It's all black with no way to control it.)
There definitely has to be some kind of conflict but I haven't figured it out yet.
I did try it using WP 3.5.2 with the same results.
I do like the plugin. I think it is very good. It's just annoying that I can't use the dropdown,