Option Remove delay after "play sound () until done" allowing songs to loop seamlessly

[H-A-M-G-E-R]

when flag clicked
play sound (start) until done
forever {
play sound (loop) until done
}

should be no delay between start and loop or loop and loop with this option enabled
without any custom extensions that make it unloadable on vanilla scratch

[CST1229]

the thing is also that scripts running are always aligned to frame increments, and that can't really be fixed.

[H-A-M-G-E-R]

So I think seamless looping be added to the compiler (remove any frame delays), it's impossible using scratch's interpreter
I know that the MP3 format has a limitation that a tiny delay is added, so I use .ogg disguised as .mp3 to remove the tiny delay before the sound.
Even if the script is run in a no-screen-refresh custom block it's still not seamless