We're fine! XP
You can put "sprites.info" in any folder that you want.
Inside it, you need to write something like:
player.png, 32, 32;250, 250, 400, 250
The first part is the name of the file containing the player's sprites.
The second and third parts are the sprites size (I'm guessing they all need to be the same size).
And the last part, after the ";", is the duration that each sprite will take before the next one (sprite1 will take 250ms, sprite2: 250ms, sprite3: 400ms, sprite4: 250ms (I think they're milliseconds)).
Then, one way of doing it is by loading those sprites with the utiLITI.
To do so, first open utiLITI and import your map.
After that, go to: Project -> Import Spritefile...
And select your "sprites.info" file.
Save and done.