More options for the Sound extension

[Alestore]

I think the Sound extension has a lot of potential. I haven't tried yet if it's possible to start the sound from a local directory (presumably from the same folder as the project).

What I would definitely like to see in this extension is:

• Ability to stop a sound while it's playing
• Blocks to change sound volume
• Apply effects (similar to the blocks included in Scratch related to Sound)

This extension, with the additions that I have recommended, would be a solution to the continuous lag and the heaviness of certain projects that have loaded the entire running project into RAM. Making the sounds available within a local directory would allow the audio to play even offline and without sound load times (if heavy enough). Also, playing audio files only when needed without having all other audio loaded into RAM memory (even when they are not being played), would save a lot of memory and the initial load times of packaged projects would be drastically reduced.