Possibility of image being recycled is taken into account while drawing an image, reloading the default image and loading an image from cache.
File explorer honors Android lifecycle, remembers current directory.
Image recycle check is in sound's getImage method.
Better icon instructions.
Fixed toast when can't read sdcard. Added failsafes and parameters to context utils.
Editor saves and loads its last state with Android lifecycle.
Fix sound moving on auto-arrange mode.