Foobar is almost perfect except the lack of crossfading and broken WASAPI exclusive mode output, which every other WinAmp clone seem to have gotten right, e.g. AIMP.
IIRC, exercism doesn't really encourage completing things for points, and didn't especially heavily gamify the learning process. Copying answers really just seemed like shortchanging yourself when I was using it.
Doesn't that really depend upon the way that you treat the problem? If you're just looking to pass, what do you have to gain? This isn't a course in College.
If you don't know how to even get started, what do you have to gain from just being stuck?
When I started on the assembly track, looking at others code to figure out how to get set up for the first challenge allowed me to do the rest on my own.
I'm in the opposite camp. I haven't had any problems with W10. It's an improvement from W8 and way faster than W7. The only thing that was annoying me was the updates, but I disabled those with a tool.