fix: Restore live stream metadata display on web interface

- Fix Icecast API endpoint to use proper HTTP basic authentication
- Handle both string and byte responses from drakma:http-request
- Parse XML response to extract track title and listener count
- Return JSON in format expected by frontend JavaScript

Now Playing info now updates correctly on both front page and player page:
- Shows current track (e.g. 'Vector Lovers - Boulevard')
- Updates every 10 seconds automatically
- Displays real-time listener counts

AAC streaming feature is now complete with full live metadata integration.

asteroid.lisp

@@ -315,10 +315,32 @@
   "Get live status from Icecast server"
   (setf (radiance:header "Content-Type") "application/json")
   (handler-case
-    (let* ((icecast-url "http://localhost:8000/status-json.xsl")
-           (response (drakma:http-request icecast-url :want-stream nil)))
+    (let* ((icecast-url "http://localhost:8000/admin/stats.xml")
+           (response (drakma:http-request icecast-url 
+                                         :want-stream nil
+                                         :basic-authorization '("admin" "asteroid_admin_2024"))))
       (if response
-          (babel:octets-to-string response :encoding :utf-8)  ; Convert response to string
+          (let ((xml-string (if (stringp response) 
+                                response 
+                                (babel:octets-to-string response :encoding :utf-8))))
+            ;; Simple XML parsing to extract source information
+            ;; Look for <source mount="/asteroid.mp3"> sections and extract title, listeners, etc.
+            (multiple-value-bind (match-start match-end)
+                (cl-ppcre:scan "<source mount=\"/asteroid\\.mp3\">" xml-string)
+              (if match-start
+                  (let* ((source-section (subseq xml-string match-start 
+                                                 (or (cl-ppcre:scan "</source>" xml-string :start match-start)
+                                                     (length xml-string))))
+                         (title (or (cl-ppcre:regex-replace-all ".*<title>(.*?)</title>.*" source-section "\\1") "Unknown"))
+                         (listeners (or (cl-ppcre:regex-replace-all ".*<listeners>(.*?)</listeners>.*" source-section "\\1") "0")))
+                    ;; Return JSON in format expected by frontend
+                    (cl-json:encode-json-to-string
+                     `(("icestats" . (("source" . (("listenurl" . "http://localhost:8000/asteroid.mp3")
+                                                   ("title" . ,title)
+                                                   ("listeners" . ,(parse-integer listeners :junk-allowed t)))))))))
+                  ;; No source found, return empty
+                  (cl-json:encode-json-to-string
+                   `(("icestats" . (("source" . nil))))))))
           (cl-json:encode-json-to-string
            `(("error" . "Could not connect to Icecast server")))))
     (error (e)