Lately I've been interested in possibly making some flags and soundbanks for Worms Armageddon but from my personal experience it has been a hassle to get custom images and audio to work ingame.  For example, I tried working on making a new soundbank and setting the audio to the correct rate but the game wouldn't play the audio at all.  As another example, I created a custom Autobot flag originally for use in Worms World Party, tested it and found it to work perfectly fine.  I then uploaded it here under the idea that it should work in Worms Armageddon and Worms 2 as well since the specifications should be exactly the same.  Recently though I tried it out in Armageddon and while it did appear in the custom team creator, it showed up as a black box ingame for some reason.  To that end I was wondering if there were any automatic conversion tools I may not have heard about before that can convert images and sound into a format that Worms Armageddon is okay with.  I've tried searching the internet and forums for any tools or tutorials regarding this subject but for some reason I can't seem to find anything and I feel like I'm missing something really obvious.  Any help or suggestions in this matter would be appreciated.

P.S. for reference here is the flag in question.