diff --git a/jam-ui/src/store/features/mediaSlice.js b/jam-ui/src/store/features/mediaSlice.js
index 901406b39..15b110e39 100644
--- a/jam-ui/src/store/features/mediaSlice.js
+++ b/jam-ui/src/store/features/mediaSlice.js
@@ -59,15 +59,38 @@ export const downloadJamTrack = createAsyncThunk(
         progress: 0
       }));
 
-      // Get package ID (simplified - use first available package)
-      // Real implementation would use pickMyPackage() logic from legacy
-      const mixdowns = await jamClient.JamTrackGetMixdowns(jamTrack.id);
-      const packageId = mixdowns && mixdowns.length > 0 ? mixdowns[0].packageId : null;
+      // Get client sample rate for package selection (pickMyPackage logic)
+      const sampleRate = await jamClient.GetSampleRate();
 
-      if (!packageId) {
-        throw new Error('No mixdown package available');
+      // Get mixdowns and find compatible package
+      const mixdowns = await jamClient.JamTrackGetMixdowns(jamTrack.id);
+
+      if (!mixdowns || mixdowns.length === 0) {
+        throw new Error('No mixdowns available for this JamTrack');
       }
 
+      // Find the first mixdown (use selected mixdownId if provided, else use first)
+      const mixdown = mixdownId
+        ? mixdowns.find(m => m.id === mixdownId) || mixdowns[0]
+        : mixdowns[0];
+
+      if (!mixdown || !mixdown.packages || mixdown.packages.length === 0) {
+        throw new Error('Mixdown has no packages available');
+      }
+
+      // pickMyPackage logic: find compatible package (ogg, jkz, matching sample rate)
+      const compatiblePackage = mixdown.packages.find(pkg =>
+        pkg.file_type === 'ogg' &&
+        pkg.encrypt_type === 'jkz' &&
+        pkg.sample_rate === sampleRate
+      );
+
+      if (!compatiblePackage) {
+        throw new Error(`No compatible package found for sample rate ${sampleRate}kHz`);
+      }
+
+      const packageId = compatiblePackage.id;
+
       // Set up global callbacks for native client
       window.jamTrackDownloadProgress = (percent) => {
         dispatch(setDownloadState({ progress: percent }));