Detect embedded ASS/SSA subtitles (thanks leroy!)

src/main/java/net/pms/dlna/DLNAMediaSubtitle.java

@@ -102,6 +102,23 @@ public String getSubType() {
 		return "-";
 	}
 
+	/**
+	 * Returns whether or not the subtitles are embedded.
+	 *
+	 * @return True if the subtitles are embedded, false otherwise.
+	 * @since 1.51.0
+	 */
+	public boolean isEmbedded() {
+		switch (type) {
+			case ASS:
+				// No file available means the subtitles are embedded
+				return (file == null);
+			case EMBEDDED:
+				return true;
+		}
+		return false;
+	}
+
 	public String toString() {
 		return "Sub: " + getSubType() + " / lang: " + getLang() + " / flavor: " + flavor + " / ID: " + getId() + " / FILE: " + (file != null ? file.getAbsolutePath() : "-");
 	}

src/main/java/net/pms/dlna/DLNAResource.java

@@ -536,9 +536,10 @@ public void addChild(DLNAResource child) {
 						}
 
 						boolean hasEmbeddedSubs = false;
+
 						if (child.getMedia() != null) {
 							for (DLNAMediaSubtitle s : child.getMedia().getSubtitlesCodes()) {
-								hasEmbeddedSubs |= s.getSubType().equals("Embedded");
+								hasEmbeddedSubs = (hasEmbeddedSubs || s.isEmbedded());
 							}
 						}