I understand your point, but I thinkk you don't understand mine. It's not about loops. It's about processing (non-invasive on-the-fly or offline) and people who use exe files, because they are not DAW people (it does not means that they are not pro audio). It's not hypothetical, because such market is greater than DAW market. And it's about things I'm familiar with in non-SM environments.
You are saying that everything is achievable in SM. I agree, but in exchange I tell you something. I resigned from Synthedit after few days, because although everything is achievable there too - I simply did not how to make it. SM seems to be easier to use, despite the fact that some behaviours semed to be a little better in SE.
Just simple streaming. It's not like loading a file to memory, where you need to reserve that memory for the whole file or files, it's partial loading, working with buffers. I don't know how to make it, but I have a vague knowledge how it works.
I'm a task oriented person, and I generally know how much certain real-world tasks eat of the CPU and RAM. I did split my thinking into steps and this is the step I asked about. My excitement is about SM in general, but my precautions are regarding practical limitations that I can face with.
Do I need to explain that in secrecy I'm doing a warp drive for space travels to exceed the speed of light?
p.s.: my intention is not to offend you nor insist; it's just this topic is much bigger than my english.