Docs: correct RemSound's origin story (true remote-audio-monitoring use)

The manual intro and the repo README both carried an invented origin (a guitarist
and singer playing together, "built by a sound designer"). RemSound was actually
built to hear the audio from a powerful computer while working remotely from a
lighter one — other programs can move audio between PCs, but none did it quite the
way Ed wanted. Reworded the manual opening (readme.html) and the README audience
and "Who made this" lines to tell one true, consistent story in Ed's voice. The
music-together and podcast uses stay as the genuine secondary use cases they are.

readme.html ships to users on the next release; README/MANUAL update on push.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

MANUAL.md

@@ -2,7 +2,7 @@
 
 RemSound is a Windows program that sends live sound from one computer to another, with very little delay. Picture a private audio link between two or more computers: each one decides what sound it wants to send and what sound it wants to play, and the audio travels straight between them over your network.
 
-It was built for playing music together over the internet — a guitarist on one computer and a singer on another, hearing each other in real time — but it works just as well for listening to one room from another room in your house, co-hosting a podcast, or anything else where you want to get sound from one PC to another, fast.
+I built RemSound to solve a specific problem of my own. I do a lot of work on a powerful computer that I control remotely from a lighter machine, and I wanted to actually hear that powerful machine's audio on the laptop in front of me. There are other programs that can move sound between PCs, but none of them did it quite the way I wanted, so I made my own. It turns out the same thing is just as handy for listening to one room from another room in your house, playing music together over the internet with very little delay, co-hosting a podcast, or anything else where you want to get sound from one PC to another, fast.
 
 ## Table of contents
 

README.md

@@ -6,7 +6,7 @@
 
 ---
 
-RemSound is for musicians, sound designers, podcasters, and anyone else who wants to share audio between two Windows machines with as little delay as possible.
+RemSound is for anyone who wants to get live audio from one Windows PC to another with as little delay as possible — listening to one machine while you work at another, playing music together over the internet, co-hosting a podcast, and plenty more besides.
 
 You sit at one computer, RemSound captures whatever is playing — a track in your music software, a video call, system sound from anything else running — and sends it cleanly to another computer where it plays through speakers or headphones in real time. The person at the other end hears what you're hearing, with a delay measured in milliseconds rather than seconds.
 
@@ -67,7 +67,7 @@ The full user manual is right here on GitHub: **[Read the user manual](MANUAL.md
 
 ## Who made this
 
-RemSound was built by a sound designer who wanted to listen to one of his computers while sitting at another, and couldn't find anything else that fit the bill. It's free, open-source, and yours to use however you like.
+RemSound was built to solve a specific problem: hearing the audio from a powerful computer while sitting at a lighter one, with that powerful machine running remotely. There are other programs that can move audio between PCs, but none of them did it quite the way I wanted, so I built my own. It's free, open-source, and yours to use however you like.
 
 ## Licence
 

readme.html

@@ -23,7 +23,7 @@ ul, ol { padding-left: 1.4em; }
 
 <p>RemSound is a Windows program that sends live sound from one computer to another, with very little delay. Picture a private audio link between two or more computers: each one decides what sound it wants to send and what sound it wants to play, and the audio travels straight between them over your network.</p>
 
-<p>It was built for playing music together over the internet &mdash; a guitarist on one computer and a singer on another, hearing each other in real time &mdash; but it works just as well for listening to one room from another room in your house, co-hosting a podcast, or anything else where you want to get sound from one PC to another, fast.</p>
+<p>I built RemSound to solve a specific problem of my own. I do a lot of work on a powerful computer that I control remotely from a lighter machine, and I wanted to actually hear that powerful machine's audio on the laptop in front of me. There are other programs that can move sound between PCs, but none of them did it quite the way I wanted, so I made my own. It turns out the same thing is just as handy for listening to one room from another room in your house, playing music together over the internet with very little delay, co-hosting a podcast, or anything else where you want to get sound from one PC to another, fast.</p>
 
 <h2>Table of contents</h2>
 <ol>