We've udpated our clean and simple HTML5 audio player with a new graphical interface. Works on mobile & desktop devices, with Flash fallback for browsers that do not support HTML5.
Name: Haiku Audio Player
License: GPL
Product demo page: http://madebyraygun.com/lab/haiku
Product info page: http://wordpress.org/extend/plugins/haiku-minimalist-audio-player/
Screenshots: http://wordpress.org/extend/plugins/haiku-minimalist-audio-player/screenshots/