Hi all,
I've just finished a basic implementation of a polyphonic sample player. It basically takes a bank of sample files from the SD card and allows playing in real time. You'll need an LPC1769 based MIOS32 device, the SD card interface and a I2S DAC...
Further details and links to files on the wiki here: http://www.midibox.org/dokuwiki/doku.php?id=midibox_sd_card_sample_player
Many thanks
Lee