diff --git a/mnemo_cards_backend/lib/database/daos/pack_dao.dart b/mnemo_cards_backend/lib/database/daos/pack_dao.dart
index 47c5028..912178f 100644
--- a/mnemo_cards_backend/lib/database/daos/pack_dao.dart
+++ b/mnemo_cards_backend/lib/database/daos/pack_dao.dart
@@ -283,15 +283,22 @@ class PackDao extends DatabaseAccessor<AppDatabase> with _$PackDaoMixin {
   Future<List<VoiceModel>> getCardVoices(String cardId) async {
     print('🔍 DAO getCardVoices: Querying voices for card $cardId');
     
-    // First, check if there are any voices in CardVoices table for this card
+    // First, check if there are any voices in VoiceModels table with direct cardId link
+    final directVoicesQuery = select(voiceModels)
+      ..where((v) => v.cardId.equals(cardId));
+    final directVoices = await directVoicesQuery.get();
+    print('🔍 DAO getCardVoices: Found ${directVoices.length} voices in VoiceModels with direct cardId link');
+    
+    // Check if there are any voices in CardVoices table for this card
     final countExpr = cardVoices.cardId.count();
     final countQuery = selectOnly(cardVoices)
       ..addColumns([countExpr])
       ..where(cardVoices.cardId.equals(cardId));
     final countResult = await countQuery.getSingle();
     final count = countResult.read(countExpr) ?? 0;
-    print('🔍 DAO getCardVoices: Found $count entries in CardVoices table for card $cardId');
+    print('🔍 DAO getCardVoices: Found $count entries in CardVoices junction table for card $cardId');
     
+    // Query through junction table
     final query = select(voiceModels).join([
       innerJoin(
         cardVoices,
@@ -301,7 +308,13 @@ class PackDao extends DatabaseAccessor<AppDatabase> with _$PackDaoMixin {
     ]);
     
     final result = await query.map((row) => row.readTable(voiceModels)).get();
-    print('🔍 DAO getCardVoices: Query returned ${result.length} voices');
+    print('🔍 DAO getCardVoices: Query through junction table returned ${result.length} voices');
+    
+    // If junction table query returns nothing but direct link exists, return direct voices
+    if (result.isEmpty && directVoices.isNotEmpty) {
+      print('⚠️ DAO getCardVoices: Junction table is empty but direct link exists! Using direct voices.');
+      return directVoices;
+    }
     
     return result;
   }
@@ -310,16 +323,44 @@ class PackDao extends DatabaseAccessor<AppDatabase> with _$PackDaoMixin {
   Future<void> addVoiceToCard(String cardId, String voiceId) async {
     print('🔍 DAO addVoiceToCard: Linking voice $voiceId to card $cardId');
     try {
-      await into(cardVoices).insert(
+      // Check if voice exists
+      final voice = await getVoiceById(voiceId);
+      if (voice == null) {
+        print('❌ DAO addVoiceToCard: Voice $voiceId does not exist!');
+        throw Exception('Voice $voiceId does not exist');
+      }
+      print('✅ DAO addVoiceToCard: Voice $voiceId exists with cardId=${voice.cardId}');
+      
+      // Check if card exists
+      final card = await getCardById(cardId);
+      if (card == null) {
+        print('❌ DAO addVoiceToCard: Card $cardId does not exist!');
+        throw Exception('Card $cardId does not exist');
+      }
+      print('✅ DAO addVoiceToCard: Card $cardId exists');
+      
+      // Insert into junction table
+      final result = await into(cardVoices).insert(
         CardVoicesCompanion.insert(
           cardId: cardId,
           voiceId: voiceId,
         ),
         mode: InsertMode.insertOrIgnore,
       );
-      print('✅ DAO addVoiceToCard: Successfully linked voice $voiceId to card $cardId');
-    } catch (e) {
+      print('✅ DAO addVoiceToCard: Insert result: $result');
+      
+      // Verify the insert
+      final verifyQuery = select(cardVoices)
+        ..where((cv) => cv.cardId.equals(cardId) & cv.voiceId.equals(voiceId));
+      final verifyResult = await verifyQuery.getSingleOrNull();
+      if (verifyResult == null) {
+        print('❌ DAO addVoiceToCard: Verification failed! Link was not created.');
+      } else {
+        print('✅ DAO addVoiceToCard: Successfully linked and verified voice $voiceId to card $cardId');
+      }
+    } catch (e, stackTrace) {
       print('❌ DAO addVoiceToCard: Error linking voice $voiceId to card $cardId: $e');
+      print('Stack trace: $stackTrace');
       rethrow;
     }
   }
diff --git a/mnemo_cards_web_v2/lib/utils/card_image_utils.dart b/mnemo_cards_web_v2/lib/utils/card_image_utils.dart
new file mode 100644
index 0000000..750873d
--- /dev/null
+++ b/mnemo_cards_web_v2/lib/utils/card_image_utils.dart
@@ -0,0 +1,69 @@
+import 'package:mnemo_cards_common/mnemo_cards_common.dart';
+import '../domain/config/api_config_v2.dart';
+
+/// Utility functions for working with card images
+class CardImageUtils {
+  /// Get the display URL for a card's image
+  /// 
+  /// Priority:
+  /// 1. imageUrl (presigned URL from backend)
+  /// 2. image if it's a full URL (starts with http/https)
+  /// 3. image if it's a filename - convert to API endpoint URL
+  /// 
+  /// Returns null if no image is available
+  static String? getCardImageUrl(
+    GameCardDto card,
+    String packId,
+  ) {
+    // First priority: use presigned URL if available
+    if (card.imageUrl != null && card.imageUrl!.isNotEmpty) {
+      return card.imageUrl;
+    }
+
+    // Second priority: check if image is a full URL
+    final image = card.image;
+    if (image != null && image.isNotEmpty) {
+      // If it's already a full URL, use it
+      if (image.startsWith('http://') || image.startsWith('https://')) {
+        return image;
+      }
+
+      // If it's a filename, convert to API endpoint URL
+      return ApiConfigV2.getCardImageUrl(packId, card.id);
+    }
+
+    return null;
+  }
+
+  /// Get the display URL for a card's back image
+  /// 
+  /// Priority:
+  /// 1. imageBackUrl (presigned URL from backend)
+  /// 2. imageBack if it's a full URL (starts with http/https)
+  /// 3. imageBack if it's a filename - convert to API endpoint URL
+  /// 
+  /// Returns null if no back image is available
+  static String? getCardImageBackUrl(
+    GameCardDto card,
+    String packId,
+  ) {
+    // First priority: use presigned URL if available
+    if (card.imageBackUrl != null && card.imageBackUrl!.isNotEmpty) {
+      return card.imageBackUrl;
+    }
+
+    // Second priority: check if imageBack is a full URL
+    final imageBack = card.imageBack;
+    if (imageBack != null && imageBack.isNotEmpty) {
+      // If it's already a full URL, use it
+      if (imageBack.startsWith('http://') || imageBack.startsWith('https://')) {
+        return imageBack;
+      }
+
+      // If it's a filename, convert to API endpoint URL
+      return ApiConfigV2.getCardImageBackUrl(packId, card.id);
+    }
+
+    return null;
+  }
+}