this is now a warn

src/ui/window.rs

@@ -382,11 +382,16 @@ mod imp {
             }
             .unwrap();
 
-            assert_eq!(
+            {
-                duration.map(|f| f as i64),
+                let left = duration.map(|f| f as i64);
-                self.song().as_ref().map(crate::PlaybinSong::duration),
+                let right = self.song().as_ref().map(crate::PlaybinSong::duration);
-                "mpv duration doesn not match subsonic duration (this should probably be a warn)"
+                if left != right {
+                    event!(
+                        Level::WARN,
+                        "mpv duration {left:?} doesn not match subsonic duration {right:?}"
                     );
+                }
+            }
 
             duration.unwrap_or(0.0) // placeholder
         }