You should be able to make one yourself fairly easily if you have basic soldering skills. Here's a link on how to make a TV-OUT cable that details out the entire pin-out for the connector port.
http://www.gp32x.de/board/index.php?/topic/56832-tv-out-selfmade-cable/
Looks like you can solder a...
I recently bought a Caanoo and LOVE it. There used to be a commercially available TV out cable but I couldn't find it available for purchase anymore. Fortunately, there are instructions on how to make your own which was pretty easy if you know how to solder. Once I got all the materials...
I just got a Caanoo a few weeks ago and love it as well. Happy to report that every GBA game I've tried so far works perfectly. MAME works perfectly as well as long as you're using the proper roms.
I just bought a brand new Caanoo from GameSuave.com last week. Shipping was REALLY fast.
http://www.gamesuave.com/categories/Gamepark-Gp2x-Caanoo
The Caanoo is my first handheld gaming device and I'm having TONS of fun replaying arcade classics from my childhood. I was a bit apprehensive...