I've recently installed the Google Chrome extension Streamkeys which allows the user to use keyboard commands to perform common playback actions on popular streaming sites (Youtube, Soundcloud, and many major sites).
For macOS, Streamkeys default setting is to use the global Mac media keys (⏪ ▶/❚❚ ⏩).
Due to Chrome design, global keys cannot be rebound to use modifier keys like SHIFT + ▶/❚❚.
I like the idea of using the media keys for global Soundcloud/Youtube control, so what I'd like to do is to rebind the keyboard so that iTunes instead uses modifier keys like SHIFT + ▶/❚❚. That way, I can have the best of two worlds.
Question: How can I "duplicate" these three keys to a new location and use them to control iTunes, while still letting Chrome think that they are in their old location? In other words, I would effectively like two pairs of the same keys, only that one pair controls iTunes and one pair controls Chrome Streamkeys.
Is this even possible, and am I thinking about it the right way, when assuming that I would need "duplicates"? Just rebinding the keys would probably not work, since Chrome would still find the keys and "take them" for Streamkeys?
Note again: this is about global control. It is not the same as in-tab in Chrome or in-app in iTunes.