diff --git a/juke-wizard/Sources/JukeWizard/JukeCloud.swift b/juke-wizard/Sources/JukeWizard/JukeCloud.swift
--- a/juke-wizard/Sources/JukeWizard/JukeCloud.swift
+++ b/juke-wizard/Sources/JukeWizard/JukeCloud.swift
@@ -87,10 +87,14 @@ var upload = URLRequest(url: prepared.uploadURL)
         upload.httpMethod = "PUT"
         for (name, value) in prepared.headers { upload.setValue(value, forHTTPHeaderField: name) }
         upload.setValue(String(bytes), forHTTPHeaderField: "Content-Length")
-        let (_, response) = try await session.upload(for: upload, fromFile: file)
+        let (uploadData, response) = try await session.upload(for: upload, fromFile: file)
         let status = (response as? HTTPURLResponse)?.statusCode ?? 0
         guard (200..<300).contains(status) else {
-            throw JukeCloudClientError.response("Upload failed (\(status)).")
+            let body = String(data: uploadData, encoding: .utf8) ?? ""
+            let detail = body.components(separatedBy: "<Message>").dropFirst().first?
+                .components(separatedBy: "</Message>").first
+            throw JukeCloudClientError.response(
+                "Upload failed (\(status))\(detail.map { ": \($0)" } ?? ".")")
         }
         return prepared.track
     }
diff --git a/juke-wizard/bin/juke-cloud.mjs b/juke-wizard/bin/juke-cloud.mjs
--- a/juke-wizard/bin/juke-cloud.mjs
+++ b/juke-wizard/bin/juke-cloud.mjs
@@ -63,7 +63,10 @@ headers: { ...prepared.headers, "Content-Length": String(stat.size) },
     body: Readable.toWeb(createReadStream(absolute)),
     duplex: "half",
   });
-  if (!response.ok) throw new Error(`Upload failed (${response.status})`);
+  if (!response.ok) {
+    const detail = (await response.text()).match(/<Message>([^<]+)<\/Message>/)?.[1];
+    throw new Error(`Upload failed (${response.status})${detail ? `: ${detail}` : ""}`);
+  }
   return prepared.track;
 }
 
diff --git a/system/netlify/functions/juke-cloud.mjs b/system/netlify/functions/juke-cloud.mjs
--- a/system/netlify/functions/juke-cloud.mjs
+++ b/system/netlify/functions/juke-cloud.mjs
@@ -164,7 +164,11 @@ ContentDisposition: "inline",
       ACL: "public-read",
     }), { expiresIn: 15 * 60 });
     const track = trackFromObject({ Key: key, Size: bytes, LastModified: new Date() });
-    return respond(200, { uploadURL, headers: { "Content-Type": contentType }, track });
+    return respond(200, {
+      uploadURL,
+      headers: { "Content-Type": contentType, "Content-Disposition": "inline" },
+      track,
+    });
   } catch (error) {
     console.error("juke-cloud failed", error?.message || error);
     return respond(503, { error: "Juke cloud is temporarily unavailable." });