From 2452e6fba3e4b540acdfcf4dec8f28ddeafcc1e0 Mon Sep 17 00:00:00 2001
From: Hans Dijkema <hans@dijkewijk.nl>
Date: Sun, 9 Aug 2026 19:55:11 +0200
Subject: [PATCH] index

---
 scribblings/racket-audio-dlna.scrbl | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/scribblings/racket-audio-dlna.scrbl b/scribblings/racket-audio-dlna.scrbl
index 58a6b24..ecefd1f 100644
--- a/scribblings/racket-audio-dlna.scrbl
+++ b/scribblings/racket-audio-dlna.scrbl
@@ -5,7 +5,7 @@
    racket/base
    racket/contract
    racket-audio-dlna
-   racket-upnp))
+   racket-upnp/media-renderer))
 
 @title{racket-audio-dlna}
 @author{Hans Dijkema}
@@ -14,7 +14,7 @@
 
 This package plays local audio files on UPnP and DLNA media renderers.  It
 uses @racketmodname[racket-audio/taglib] for metadata and audio properties,
-and @racketmodname[racket-upnp] for HTTP publication, DIDL-Lite, and renderer
+and the @tt{racket-upnp} package for HTTP publication, DIDL-Lite, and renderer
 control.
 
 @section{Creating a player}
@@ -128,6 +128,10 @@ Values are limited to the renderer range where applicable.  A successful
 command updates the cache immediately.
 
 @section{Cached information}
+@defproc[(dlna-info? [value any/c]) boolean?]{
+Returns @racket[#t] when @racket[value] is a cached player snapshot.
+}
+
 
 @defproc[(dlna-player-info
           [player dlna-player?]
@@ -157,6 +161,10 @@ the previous values and sets @racket[dlna-info-reachable?] to @racket[#f].
 @defproc[(dlna-info-reachable? [info dlna-info?]) boolean?]
 
 @section{Track metadata}
+@defproc[(dlna-track-info? [value any/c]) boolean?]{
+Returns @racket[#t] when @racket[value] contains cached track metadata.
+}
+
 
 @defproc[(dlna-track-info-file [track dlna-track-info?]) path?]
 @defproc[(dlna-track-info-title [track dlna-track-info?]) string?]