Hi. I have been using the free version of Yellow Pencil for a few months now and am a big fan. It enabled me to change the colour and width of the standard Wordpress audio player. It is more accessible than what dedicated audio player plugins generate and are key to a website selling SAPI 5 text-to-speech voices.
Unfortunately, Yellow Pencil has started causing many errors, reported by Jetpack.
Has anybody else experienced this?