Another home made barking dog idea.
$5.00 cheap power strip
$10.00 110v AC to 12v dc converter
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=1322$11.20 SD/USB/MP3 FM Transmitter
http://www.amazon.com/MMC-Wireless-Transmitter-Remote-Black/dp/B0016BVDIK/ref=sr_1_5?ie=UTF8&s=electronics&qid=1229922632&sr=8-5
$???.?? old 110v AC radio(power switch can be always on)
$???.?? 4/8/16MB SD card came with you old digital camera
Place your MP3 Barking Dog file in the SD card and plug it in the FM Transmitter.
Power FM transmitter and old radio with the power strip.
Fine tune the wireless radio connection.
Turn on/of the power strip to simulate the X10 on/off control.
Plug the power strip to an X10 and test them out.
According to the review, the FM signal is strong and should be able to power lots of
old radios in distance.
For example
A1 front door radio only
A2 rear door radio only
B1 barking dog mp3 in FM transmitter
B2 ghost screaming
B3 Hal greeting
B4 merry Christmas song
B5 Shortgun "get off my lawn"
X10 turn on A1 A2 B1 Barking dogs in both front door and rear door
X10 turn on B4 A1 welcome your guests near front door with xmas songs