Hey everyone. I'm the plugin developer, and I'm happy to tell you that I've uploaded Showtime 3.0 to the WordPress servers. As soon as they do whatever it is they do, it will be available for download. *
*Edit: It's up. http://wordpress.org/extend/plugins/showtime/
I re-wrote the plugin basically from scratch to ensure that any of the incredibly stupid mistakes I made when I first wrote it (3 years ago) were not caught in some legacy trap that I missed.
There are several improvements, not the least of which is that now the shortcodes output properly (for anyone who was wondering, the secret was storing all the output HTML in a single variable and returning that variable, instead of using echo statements. Do not use echo statements in a shortcode function).
Anyway, thanks to everyone who has downloaded this and gotten in touch. I know it took me a really long time to issue this update, but hey, it's done now.
Please send any feedback to firstname.lastname@example.org.