Describe that solo wins over mute of the same track (#358)

Songs, Mute and solo along the routing: a track that is muted and
soloed at once is heard as soloed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Songs.md

@@ -151,12 +151,13 @@ A picked link shows two rows in the inspector:
 | **Mode** | Where on its track it takes the sound. **Post volume (Post pan)**, the default: after the sound FX, the volume and the pan. **Pre volume (Post FX)**: after the sound FX, before volume and pan. **Pre volume (Pre FX)**: right where it comes in, before the sound FX. |
 
 **Mute and solo along the routing.** A muted track passes nothing on: neither its items nor what
-comes into it, on no link, whatever its mode. While some tracks are soloed, a soloed track is heard
-with every track that goes into it. The tracks it goes through on its way out pass it on, but their
-own items are silent. Every other track is silent. So with A into B and B into the output, solo on A
-lets A be heard through B, without what lies on B. Only the ways through a soloed track are open: if
-A and B go into C and also straight into the output, solo on C lets A and B be heard through C only,
-their links into the output closed.
+comes into it, on no link, whatever its mode. Solo wins over mute: a track that is muted and soloed
+at once is heard as soloed. A muted track it goes through or that goes into it stays silent. While
+some tracks are soloed, a soloed track is heard with every track that goes into it. The tracks it
+goes through on its way out pass it on, but their own items are silent. Every other track is silent.
+So with A into B and B into the output, solo on A lets A be heard through B, without what lies on B.
+Only the ways through a soloed track are open: if A and B go into C and also straight into the
+output, solo on C lets A and B be heard through C only, their links into the output closed.
 
 **In step.** A track's links can be late by different amounts: one past a [Pitch](Sounds#a-pitch-on-a-bus)
 that is a frame late, one before it (*Pre FX*) that is not. Every way of a track is held back as far