It's mainly for if people have trouble using sound plugins like I have, or download and precache plugins. For me and many others, the current plugins available for those things are not 100% and don't work for everyone.
This, however, will always work without bugs.
Maybe it's not as easy as an already-made plugin, but I personally think it's better for everyone to know how to modify plugins to an extent.
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Please, give me some rep if you found what I posted useful. :]