Audio Playback Device with Touchscreen

A stand-alone device based on a miniature computer and 8" LCD touch screen. The operator will enter a one to four digit number and select "enter". The device will play back a short audio file in response to the number entered. There will be other audio files selectable by touch screen buttons also. This mini-computer will store all data on a flash memory card instead of a hard drive. WindowsXP or VISTA is preferred. This request is for software for a prototype unit.