diff --git a/package-lock.json b/package-lock.json
index 5cd9aa0cf..74b6e332a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
         "@fontsource/noto-sans-sc": "5.2.6",
         "@fontsource/noto-sans-tc": "5.2.6",
         "@jellyfin/libass-wasm": "4.2.3",
-        "@jellyfin/sdk": "0.0.0-unstable.202512091852",
+        "@jellyfin/sdk": "0.0.0-unstable.202601090504",
         "@jellyfin/ux-web": "1.0.0",
         "@mui/icons-material": "6.4.12",
         "@mui/material": "6.4.12",
@@ -4130,9 +4130,9 @@
       "license": "LGPL-2.1-or-later AND (FTL OR GPL-2.0-or-later) AND MIT AND MIT-Modern-Variant AND ISC AND NTP AND Zlib AND BSL-1.0"
     },
     "node_modules/@jellyfin/sdk": {
-      "version": "0.0.0-unstable.202512091852",
-      "resolved": "https://registry.npmjs.org/@jellyfin/sdk/-/sdk-0.0.0-unstable.202512091852.tgz",
-      "integrity": "sha512-N+QEsrKk4KculkV6KMBb7XpzTLWcXEzqTHbS+b4rov0VYVwR6DIsJkmUzB3hM2YZsrLIHEFKhFRy/r4itkFeHw==",
+      "version": "0.0.0-unstable.202601090504",
+      "resolved": "https://registry.npmjs.org/@jellyfin/sdk/-/sdk-0.0.0-unstable.202601090504.tgz",
+      "integrity": "sha512-ZTtSUMYjyfin54dXGZ5i9fZxLkKbMPxxsFxnmLoSVrjNrvL8JMV3Thb0fevCgd5gpkJpLVJXpx5YjwNbrze6DQ==",
       "license": "MPL-2.0",
       "peerDependencies": {
         "axios": "^1.12.0"
diff --git a/package.json b/package.json
index 1faddbadd..7d1e279e3 100644
--- a/package.json
+++ b/package.json
@@ -85,7 +85,7 @@
     "@fontsource/noto-sans-sc": "5.2.6",
     "@fontsource/noto-sans-tc": "5.2.6",
     "@jellyfin/libass-wasm": "4.2.3",
-    "@jellyfin/sdk": "0.0.0-unstable.202512091852",
+    "@jellyfin/sdk": "0.0.0-unstable.202601090504",
     "@jellyfin/ux-web": "1.0.0",
     "@mui/icons-material": "6.4.12",
     "@mui/material": "6.4.12",
diff --git a/src/apps/dashboard/features/storage/utils/space.test.ts b/src/apps/dashboard/features/storage/utils/space.test.ts
index f234a9fd0..6296d2941 100644
--- a/src/apps/dashboard/features/storage/utils/space.test.ts
+++ b/src/apps/dashboard/features/storage/utils/space.test.ts
@@ -1,35 +1,36 @@
+import type { FolderStorageDto } from '@jellyfin/sdk/lib/generated-client/models/folder-storage-dto';
 import { describe, expect, it } from 'vitest';
 
 import { calculateUsedPercentage, calculateTotal } from './space';
 
 describe('calculateTotal()', () => {
     it('should return the total', () => {
-        expect(calculateTotal({ FreeSpace: 1, UsedSpace: 2 })).toBe(3);
+        expect(calculateTotal({ FreeSpace: 1, UsedSpace: 2 } as FolderStorageDto)).toBe(3);
     });
 
     it('should return -1 for invalid used space values', () => {
-        expect(calculateTotal({ FreeSpace: 1 })).toBe(-1);
-        expect(calculateTotal({ FreeSpace: 1, UsedSpace: -1 })).toBe(-1);
+        expect(calculateTotal({ FreeSpace: 1 } as FolderStorageDto)).toBe(-1);
+        expect(calculateTotal({ FreeSpace: 1, UsedSpace: -1 } as FolderStorageDto)).toBe(-1);
     });
 
     it('should treat invalid free space values as 0', () => {
-        expect(calculateTotal({ UsedSpace: 1 })).toBe(1);
-        expect(calculateTotal({ FreeSpace: -1, UsedSpace: 1 })).toBe(1);
+        expect(calculateTotal({ UsedSpace: 1 } as FolderStorageDto)).toBe(1);
+        expect(calculateTotal({ FreeSpace: -1, UsedSpace: 1 } as FolderStorageDto)).toBe(1);
     });
 });
 
 describe('calculateUsedPercentage', () => {
     it('should return the percentage used', () => {
-        expect(calculateUsedPercentage({ FreeSpace: 1, UsedSpace: 3 })).toBe(75);
+        expect(calculateUsedPercentage({ FreeSpace: 1, UsedSpace: 3 } as FolderStorageDto)).toBe(75);
     });
 
     it('should return 0 for invalid used space values', () => {
-        expect(calculateUsedPercentage({ FreeSpace: 1 })).toBe(0);
-        expect(calculateUsedPercentage({ FreeSpace: 1, UsedSpace: -1 })).toBe(0);
+        expect(calculateUsedPercentage({ FreeSpace: 1 } as FolderStorageDto)).toBe(0);
+        expect(calculateUsedPercentage({ FreeSpace: 1, UsedSpace: -1 } as FolderStorageDto)).toBe(0);
     });
 
     it('should return 100 for invalid free space values', () => {
-        expect(calculateUsedPercentage({ UsedSpace: 1 })).toBe(100);
-        expect(calculateUsedPercentage({ FreeSpace: -1, UsedSpace: 1 })).toBe(100);
+        expect(calculateUsedPercentage({ UsedSpace: 1 } as FolderStorageDto)).toBe(100);
+        expect(calculateUsedPercentage({ FreeSpace: -1, UsedSpace: 1 } as FolderStorageDto)).toBe(100);
     });
 });
diff --git a/src/apps/experimental/features/details/components/buttons/MoreCommandsButton.tsx b/src/apps/experimental/features/details/components/buttons/MoreCommandsButton.tsx
index 6d623f0d9..1ced8015b 100644
--- a/src/apps/experimental/features/details/components/buttons/MoreCommandsButton.tsx
+++ b/src/apps/experimental/features/details/components/buttons/MoreCommandsButton.tsx
@@ -15,7 +15,7 @@ import type { NullableString } from 'types/base/common/shared/types';
 import type { ItemDto } from 'types/base/models/item-dto';
 
 interface PlayAllFromHereOptions {
-    item: ItemDto;
+    item?: ItemDto;
     items: ItemDto[];
     serverId: NullableString;
     queue?: boolean;
@@ -166,7 +166,7 @@ const MoreCommandsButton: FC<MoreCommandsButtonProps> = ({
                             serverId: item?.ServerId
                         });
                         playAllFromHere({
-                            item: item || {},
+                            item: item,
                             items: items || [],
                             serverId: item?.ServerId
                         }).catch(err => {
@@ -174,7 +174,7 @@ const MoreCommandsButton: FC<MoreCommandsButtonProps> = ({
                         });
                     } else if (result.command === 'queueallfromhere') {
                         playAllFromHere({
-                            item: item || {},
+                            item: item,
                             items: items || [],
                             serverId: item?.ServerId,
                             queue: true
diff --git a/src/apps/stable/features/playback/utils/image.ts b/src/apps/stable/features/playback/utils/image.ts
index 4497846d9..6eb5831c3 100644
--- a/src/apps/stable/features/playback/utils/image.ts
+++ b/src/apps/stable/features/playback/utils/image.ts
@@ -47,7 +47,7 @@ export function getImageUrl(item: ItemDto, options: ImageOptions = {}) {
     const itemId = item.PrimaryImageItemId || item.Id;
 
     if (itemId && item.ImageTags?.[options.type]) {
-        options.tag = item.ImageTags[options.type];
+        options.tag = item.ImageTags[options.type] ?? undefined;
         return ServerConnections.getApiClient(item.ServerId).getScaledImageUrl(itemId, options);
     }
 
diff --git a/src/apps/stable/features/playback/utils/itemText.test.ts b/src/apps/stable/features/playback/utils/itemText.test.ts
index 53c8d707e..ee170c1fe 100644
--- a/src/apps/stable/features/playback/utils/itemText.test.ts
+++ b/src/apps/stable/features/playback/utils/itemText.test.ts
@@ -7,7 +7,7 @@ import { getItemTextLines } from './itemText';
 
 describe('getItemTextLines', () => {
     it('Should return undefined if item is invalid', () => {
-        let lines = getItemTextLines({});
+        let lines = getItemTextLines({} as ItemDto);
         expect(lines).toBeUndefined();
         lines = getItemTextLines(null);
         expect(lines).toBeUndefined();
@@ -16,9 +16,9 @@ describe('getItemTextLines', () => {
     });
 
     it('Should return the name and index number', () => {
-        const item: ItemDto = {
+        const item = {
             Name: 'Item Name'
-        };
+        } as ItemDto;
         let lines = getItemTextLines(item);
         expect(lines).toBeDefined();
         expect(lines).toHaveLength(1);
@@ -39,13 +39,13 @@ describe('getItemTextLines', () => {
     });
 
     it('Should add artist names', () => {
-        let item: ItemDto = {
+        let item = {
             Name: 'Item Name',
             ArtistItems: [
                 { Name: 'Artist 1' },
                 { Name: 'Artist 2' }
             ]
-        };
+        } as ItemDto;
         let lines = getItemTextLines(item);
         expect(lines).toBeDefined();
         expect(lines).toHaveLength(2);
@@ -58,7 +58,7 @@ describe('getItemTextLines', () => {
                 'Artist 1',
                 'Artist 2'
             ]
-        };
+        } as ItemDto;
         lines = getItemTextLines(item);
         expect(lines).toBeDefined();
         expect(lines).toHaveLength(2);
@@ -67,10 +67,10 @@ describe('getItemTextLines', () => {
     });
 
     it('Should add album or series name', () => {
-        let item: ItemDto = {
+        let item = {
             Name: 'Item Name',
             SeriesName: 'Series'
-        };
+        } as ItemDto;
         let lines = getItemTextLines(item);
         expect(lines).toBeDefined();
         expect(lines).toHaveLength(2);
@@ -80,7 +80,7 @@ describe('getItemTextLines', () => {
         item = {
             Name: 'Item Name',
             Album: 'Album'
-        };
+        } as ItemDto;
         lines = getItemTextLines(item);
         expect(lines).toBeDefined();
         expect(lines).toHaveLength(2);
@@ -92,7 +92,7 @@ describe('getItemTextLines', () => {
         const item = {
             Name: 'Item Name',
             ProductionYear: 2025
-        };
+        } as ItemDto;
         const lines = getItemTextLines(item);
         expect(lines).toBeDefined();
         expect(lines).toHaveLength(2);
diff --git a/src/components/cardbuilder/Card/Card.tsx b/src/components/cardbuilder/Card/Card.tsx
index 2b5314d4c..805aa1ff0 100644
--- a/src/components/cardbuilder/Card/Card.tsx
+++ b/src/components/cardbuilder/Card/Card.tsx
@@ -7,11 +7,11 @@ import type { CardOptions } from 'types/cardOptions';
 import type { ItemDto } from 'types/base/models/item-dto';
 
 interface CardProps {
-    item?: ItemDto;
+    item: ItemDto;
     cardOptions: CardOptions;
 }
 
-const Card: FC<CardProps> = ({ item = {}, cardOptions }) => {
+const Card: FC<CardProps> = ({ item, cardOptions }) => {
     const { getCardWrapperProps, getCardBoxProps } = useCard({ item, cardOptions } );
     const cardWrapperProps = getCardWrapperProps();
     const cardBoxProps = getCardBoxProps();
diff --git a/src/components/cardbuilder/Card/cardHelper.ts b/src/components/cardbuilder/Card/cardHelper.ts
index 08adcf7ad..9fb02751d 100644
--- a/src/components/cardbuilder/Card/cardHelper.ts
+++ b/src/components/cardbuilder/Card/cardHelper.ts
@@ -217,6 +217,7 @@ function getParentTitle(
             .map(artist => {
                 const artistItem: ItemDto = {
                     ...artist,
+                    Key: artist.Id ?? '',
                     Type: BaseItemKind.MusicArtist,
                     IsFolder: true
                 };
@@ -511,6 +512,7 @@ function getChannelName(item: ItemDto) {
     if (item.ChannelId) {
         return getTextActionButton(
             {
+                Key: item.ChannelId,
                 Id: item.ChannelId,
                 ServerId: item.ServerId,
                 Name: item.ChannelName,
@@ -598,6 +600,7 @@ function getMediaTitle(cardOptions: CardOptions, item: ItemDto): TextLine {
             });
 
     return getTextActionButton({
+        Key: item.Id ?? '',
         Id: item.Id,
         ServerId: item.ServerId,
         Name: name,
@@ -620,6 +623,7 @@ function getParentTitleOrTitle(
     ) {
         if (item.SeriesId) {
             return getTextActionButton({
+                Key: item.SeriesId,
                 Id: item.SeriesId,
                 ServerId: item.ServerId,
                 Name: item.SeriesName,
diff --git a/src/components/cardbuilder/Card/useCard.ts b/src/components/cardbuilder/Card/useCard.ts
index afa3081ee..868800fd0 100644
--- a/src/components/cardbuilder/Card/useCard.ts
+++ b/src/components/cardbuilder/Card/useCard.ts
@@ -39,7 +39,7 @@ function useCard({ item, cardOptions }: UseCardProps) {
         shape
     });
     const imgUrl = imgInfo.imgUrl;
-    const blurhash = imgInfo.blurhash;
+    const blurhash = imgInfo.blurhash ?? undefined;
     const forceName = imgInfo.forceName;
     const coveredImage = cardOptions.coverImage ?? imgInfo.coverImage;
     const overlayText = cardOptions.overlayText;
diff --git a/src/components/cardbuilder/Card/useCardImageUrl.ts b/src/components/cardbuilder/Card/useCardImageUrl.ts
index 4fe68fac5..49137ea8f 100644
--- a/src/components/cardbuilder/Card/useCardImageUrl.ts
+++ b/src/components/cardbuilder/Card/useCardImageUrl.ts
@@ -111,7 +111,7 @@ function shouldShowPreferBanner(
 }
 
 function shouldShowPreferDisc(
-    imageTagsDisc: string | undefined,
+    imageTagsDisc: string | null | undefined,
     cardOptions: CardOptions
 ): boolean {
     return cardOptions.preferDisc === true && Boolean(imageTagsDisc);
diff --git a/src/components/indicators/useIndicator.tsx b/src/components/indicators/useIndicator.tsx
index 993da54b5..374e3785c 100644
--- a/src/components/indicators/useIndicator.tsx
+++ b/src/components/indicators/useIndicator.tsx
@@ -154,8 +154,8 @@ const useIndicator = (item: ItemDto) => {
 
     const getPlayedIndicator = () => {
         if (enablePlayedIndicator(item)) {
-            const userData = item.UserData || {};
-            if (userData.UnplayedItemCount) {
+            const userData = item.UserData;
+            if (userData?.UnplayedItemCount) {
                 return (
                     <Box className='countIndicator indicator unplayedItemCount'>
                         {formatCountIndicator(userData.UnplayedItemCount)}
@@ -164,9 +164,9 @@ const useIndicator = (item: ItemDto) => {
             }
 
             if (
-                (userData.PlayedPercentage
-                    && userData.PlayedPercentage >= 100)
-                || userData.Played
+                (userData?.PlayedPercentage
+                    && userData?.PlayedPercentage >= 100)
+                || userData?.Played
             ) {
                 return (
                     <Box className='playedIndicator indicator'>
diff --git a/src/components/listview/List/ListImageContainer.tsx b/src/components/listview/List/ListImageContainer.tsx
index f5839c127..55c633e5b 100644
--- a/src/components/listview/List/ListImageContainer.tsx
+++ b/src/components/listview/List/ListImageContainer.tsx
@@ -28,7 +28,7 @@ interface ListImageContainerProps {
 }
 
 const ListImageContainer: FC<ListImageContainerProps> = ({
-    item = {},
+    item,
     listOptions,
     action,
     isLargeStyle,
@@ -73,7 +73,7 @@ const ListImageContainer: FC<ListImageContainerProps> = ({
             className={imageClass}
         >
 
-            <Media item={item} imgUrl={imgUrl} blurhash={blurhash} defaultCardImageIcon={defaultCardImageIcon} />
+            <Media item={item} imgUrl={imgUrl} blurhash={blurhash ?? undefined} defaultCardImageIcon={defaultCardImageIcon} />
 
             {disableIndicators !== true && mediaSourceIndicator}
 
diff --git a/src/components/listview/List/ListItemBody.tsx b/src/components/listview/List/ListItemBody.tsx
index 19ee5ca99..5cac78bc0 100644
--- a/src/components/listview/List/ListItemBody.tsx
+++ b/src/components/listview/List/ListItemBody.tsx
@@ -22,7 +22,7 @@ interface ListItemBodyProps {
 }
 
 const ListItemBody: FC<ListItemBodyProps> = ({
-    item = {},
+    item,
     listOptions = {},
     action,
     isLargeStyle,
diff --git a/src/components/playlisteditor/playlisteditor.ts b/src/components/playlisteditor/playlisteditor.ts
index ff5c83a4b..3b0ed49ac 100644
--- a/src/components/playlisteditor/playlisteditor.ts
+++ b/src/components/playlisteditor/playlisteditor.ts
@@ -95,7 +95,7 @@ function createPlaylist(dlg: DialogElement) {
     return getPlaylistsApi(api)
         .createPlaylist({
             createPlaylistDto: {
-                Name: name,
+                Name: name ?? '',
                 IsPublic: dlg.querySelector<HTMLInputElement>('#chkPlaylistPublic')?.checked,
                 Ids: itemIds?.split(','),
                 UserId: apiClient.getCurrentUserId()