fixed duplicates showing up in pick

yt

@@ -158,7 +158,7 @@ pick() { # Pick a video to play from a playlist of videos
 			if test -z "$list"; then
 				list="$(grep "$line" "$cachefile")"
 			else
-				list="$(printf '%s\n%s' "$list" "$(grep "$line" "$cachefile")")"
+				list="$(printf '%s\n%s' "$list" "$(grep "$line" "$cachefile" | uniq)")"
 			fi
 		done
 
@@ -167,18 +167,30 @@ pick() { # Pick a video to play from a playlist of videos
 
 		test -z "$chosen" \
 			|| printf "%s: %s: Playing stream.\n" "$argv0" "$chosen" 1>&2 \
-			&& mpv "$chosen"
+			&& play "$chosen"
 	fi
 }
 
 play() { # play a video after caching its title
+	if test -z "$PLAYER"; then
+		printf "%s: Please set \$PLAYER to your preferred video player." \
+			"$argv0" 1>&2
+		exit 78 # sysexits.h(3) EX_CONFIG
+	fi
+
 	cache "$@"
-	mpv "$@"
+	"$PLAYER" "$@"
 }
 
 queue() {
+	if test -z "$PLAYER"; then
+		printf "%s: Please set \$PLAYER to your preferred video player." \
+			"$argv0" 1>&2
+		exit 78 # sysexits.h(3) EX_CONFIG
+	fi
+
 	while test -f "$YT_PL_DIR/$1.m3u"; do
-		mpv "$YT_PL_DIR/$1.m3u"
+		"$PLAYER" "$YT_PL_DIR/$1.m3u"
 		shift
 	done
 }
@@ -268,7 +280,6 @@ verify() { # replaces videos with archived versions if they are not available
 for dep in \
 	curl \
 	jq \
-	mpv \
 	yt-dlp
 do
 	if ! command -v "$dep" >/dev/null