1. Double click on a <font color=green>Group</font> should open the <font color=green>Edit event group</font> of that group.
Other users have specifically requested to have double-clicking toggle expand/collapse like it does now. So I'd rather leave it - I guess you need to expand/collapse groups more often than you edit them.
b]2. <font color=green>Crop transparent edges</font> an image will break the original size of that image.
It shouldn't do - it should keep the same proportional size. If you have a sprite at 1:1 size and import a different size image it will stay at 1:1 size as well. If it's twice as wide and you import a new image, the new image is also twice as wide. Are you sure there's a problem with this?
tw, i'm using a web download manager, and it's very annoying that they'll take the sound and try to download it
That's a problem with the download manager, you should report it as a bug to them. We can't do anything to stop that, we use built-in browser features to play audio and if someone else's software breaks that... it's not our fault! :)
b]4. please test this on each browser:
I tried running it but I can't get the player to move. It seemed to be running fine in Chrome though.
b]5. How can i embed game on Scirra Arcade to my wordpress site?
Have you seen the embed code at the bottom of each game's arcade page?