diff --git a/client/src/audio/mediaUrl.ts b/client/src/audio/mediaUrl.ts
index 7991f9b..0cea3a6 100644
--- a/client/src/audio/mediaUrl.ts
+++ b/client/src/audio/mediaUrl.ts
@@ -1,11 +1,5 @@
 const APP_BASE_PATH = import.meta.env.BASE_URL ?? '/';
 
-/** Returns whether a hostname belongs to Dropbox domains that often need proxy support. */
-function isDropboxHost(hostname: string): boolean {
-  const host = hostname.toLowerCase();
-  return host.endsWith('dropbox.com') || host.endsWith('dropboxusercontent.com');
-}
-
 /** Returns whether the URL already points at the local media proxy. */
 function isLocalMediaProxyUrl(parsed: URL): boolean {
   return parsed.origin === window.location.origin && parsed.pathname.toLowerCase().endsWith('/media_proxy.php');
@@ -15,15 +9,12 @@ function isLocalMediaProxyUrl(parsed: URL): boolean {
 export function shouldProxyRadioStreamUrl(streamUrl: string): boolean {
   try {
     const parsed = new URL(streamUrl);
-    if (isLocalMediaProxyUrl(parsed)) {
-      return false;
-    }
-    if (parsed.protocol === 'http:') return true;
-    if (parsed.protocol === 'https:' && isDropboxHost(parsed.hostname)) return true;
+    if (isLocalMediaProxyUrl(parsed)) return false;
+    if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') return false;
+    return parsed.origin !== window.location.origin;
   } catch {
     return false;
   }
-  return false;
 }
 
 /** Returns whether an arbitrary external media URL should be proxied before Web Audio playback. */
diff --git a/client/src/audio/radioStationRuntime.ts b/client/src/audio/radioStationRuntime.ts
index a0986f7..a01d244 100644
--- a/client/src/audio/radioStationRuntime.ts
+++ b/client/src/audio/radioStationRuntime.ts
@@ -112,11 +112,6 @@ function connectRadioChannelSource(
 }
 
 /** Returns whether a hostname belongs to Dropbox domains that need proxy support. */
-function isDropboxHost(hostname: string): boolean {
-  const host = hostname.toLowerCase();
-  return host.endsWith('dropbox.com') || host.endsWith('dropboxusercontent.com');
-}
-
 export function shouldProxyStreamUrl(streamUrl: string): boolean {
   try {
     const parsed = new URL(streamUrl);
@@ -126,12 +121,11 @@ export function shouldProxyStreamUrl(streamUrl: string): boolean {
     ) {
       return false;
     }
-    if (parsed.protocol === 'http:') return true;
-    if (parsed.protocol === 'https:' && isDropboxHost(parsed.hostname)) return true;
+    if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') return false;
+    return parsed.origin !== window.location.origin;
   } catch {
     return false;
   }
-  return false;
 }
 
 export function getProxyUrlForStream(streamUrl: string): string {