I wanted to announce my music synthesizer shield project on kickstarter.com.
This is based on the SAM2195 by Dream. I have seen many individuals comment on wishing this would be integrated into a shield design--now you can actually get one. You simply pipe midi information over the serial port and you have fantastic sounding music and sound effects.
All of the design files will ultimately be uploaded, but at least for now, you can hear the unit play on the project site. If you find this worthwhile, please pass this link along to anyone that would find it interesting!http://www.kickstarter.com/projects/24311020/avecsynth-an-arduino-form-factor-midi-music-synthe