Take a look at this module from Electronics123.com:
http://www.electronics123.com/shop/...d-usb-recording-module-with-light-sensor-5321
It's self-contained - you plug it into your computer's USB port, then use their software to copy a sound file into the device. I have one of these without the motion sensor, it works very well. Just use the headphone connector and run it into a big speaker with a built-in amp and you'll be fine.
The software is a bit finicky to use but they have videos that walk you through it.
They also have a couple of other versions of the same thing, look around on their site.
http://www.electronics123.com/shop/...d-usb-recording-module-with-light-sensor-5321
It's self-contained - you plug it into your computer's USB port, then use their software to copy a sound file into the device. I have one of these without the motion sensor, it works very well. Just use the headphone connector and run it into a big speaker with a built-in amp and you'll be fine.
The software is a bit finicky to use but they have videos that walk you through it.
They also have a couple of other versions of the same thing, look around on their site.
