Michael Capone

I am just getting in to game development, and I was looking for a way to quickly create some RPG-style characters for my game. I came across RPG Heroes Pack and it looks awesome. Two questions: 1 - Is RPG Heroes Pack a standalone program, or do I need to also have Spriter installed first? If I need Spriter, would the free version do, or should I get the professional version? What is the difference when using RPG Heroes Pack with the free Spriter or pro Spriter versions? 2 - Can I only use the characters I create with the RPG Heroes Pack program in RPG Maker? I do not use RPG Maker. I am creating my game in GameMaker: Studio. Can I still use RPG Heroes Pack, 'and' if I decide to sell my game later on, what are my license concerns? Thanks!