diff --git a/chatgpt-suno-tampermonkey.user.js b/chatgpt-suno-tampermonkey.user.js
index a13c672..79cf358 100644
--- a/chatgpt-suno-tampermonkey.user.js
+++ b/chatgpt-suno-tampermonkey.user.js
@@ -1,7 +1,7 @@
 // ==UserScript==
 // @name         ChatGPT to Suno Prompt Copier
 // @namespace    local.suno-helper
-// @version      0.7.7
+// @version      0.7.8
 // @description  Copy structured ChatGPT song prompt versions into Suno fields.
 // @author       local
 // @match        https://chatgpt.com/*
@@ -28,7 +28,7 @@
 (function () {
   "use strict";
 
-  const SCRIPT_VERSION = "0.7.7";
+  const SCRIPT_VERSION = "0.7.8";
   const STORAGE_KEY = "chatgptSunoPromptSlots";
   const SLOT_COUNT = 2;
   const isChatGPT = location.hostname.includes("chatgpt.com") || location.hostname.includes("chat.openai.com");
@@ -992,6 +992,25 @@
     return extractWavUrl(track.wavUrl) || ((await canReadUrl(cdnWavUrl)) ? cdnWavUrl : "");
   }
 
+  async function prepareSunoWavCandidate(track) {
+    if (!track.id) return extractWavUrl(track.wavUrl);
+    const base = `https://studio-api-prod.suno.com/api/gen/${encodeURIComponent(track.id)}`;
+    const cdnWavUrl = `https://cdn1.suno.ai/${encodeURIComponent(track.id)}.wav`;
+    try {
+      await callSunoJson(`${base}/convert_wav/`, { method: "POST" });
+    } catch (error) {
+      console.warn("[ChatGPT to Suno] convert_wav failed; local retry will continue", error);
+    }
+    try {
+      const data = await callSunoJson(`${base}/wav_file/`, { method: "GET" });
+      const direct = extractWavUrl(data);
+      if (direct) return direct;
+    } catch (error) {
+      console.warn("[ChatGPT to Suno] wav_file probe failed; local retry will continue", error);
+    }
+    return extractWavUrl(track.wavUrl) || cdnWavUrl;
+  }
+
   function downloadTextFile(text, name) {
     const blob = new Blob([text], { type: "application/json;charset=utf-8" });
     const url = URL.createObjectURL(blob);
@@ -1111,11 +1130,11 @@
     let wavPending = 0;
     for (let index = 0; index < missingTracks.length; index += 1) {
       const track = { ...missingTracks[index] };
-      setStatus(statusTarget, `${index + 1}/${missingTracks.length} 없는 곡 WAV 준비 중: ${track.title || track.id}`);
-      track.wavUrl = await requestSunoWavUrl(track);
+      setStatus(statusTarget, `${index + 1}/${missingTracks.length} 없는 곡 WAV 변환 요청 중: ${track.title || track.id}`);
+      track.wavUrl = await prepareSunoWavCandidate(track);
       if (!track.wavUrl) {
         wavPending += 1;
-        setStatus(statusTarget, `${track.title || track.id} WAV 변환 URL이 아직 안 나와서 보류 (${wavPending}곡)`);
+        setStatus(statusTarget, `${track.title || track.id} WAV 후보 URL을 못 만들어서 보류 (${wavPending}곡)`);
         continue;
       }
       const enqueueManifest = {
@@ -1138,10 +1157,10 @@
       setStatus(statusTarget, `${enqueued}/${missingTracks.length}곡 큐 추가: ${track.title || track.id} / 대기 ${data.queued ?? "?"}개`);
     }
     if (!enqueued) {
-      setStatus(statusTarget, `큐에 넣은 곡 없음. 새 곡 ${missingTracks.length}개 중 ${wavPending}개가 아직 SUNO WAV 변환 URL을 안 줬어.`);
+      setStatus(statusTarget, `큐에 넣은 곡 없음. 새 곡 ${missingTracks.length}개 중 ${wavPending}개가 WAV 후보 URL 생성 실패.`);
       return;
     }
-    setStatus(statusTarget, `큐 전송 완료: 새 곡 ${enqueued}개, WAV 보류 ${wavPending}개. 로컬 프로그램이 순서대로 처리 중.`);
+    setStatus(statusTarget, `큐 전송 완료: 새 곡 ${enqueued}개, 보류 ${wavPending}개. 로컬 프로그램이 WAV 준비를 기다리며 처리 중.`);
   }
 
   function trackOptionLabel(track, index) {
diff --git a/process-suno-library.ps1 b/process-suno-library.ps1
index 105e27d..fb1f896 100644
--- a/process-suno-library.ps1
+++ b/process-suno-library.ps1
@@ -3,6 +3,8 @@ param(
     [string]$OutputRoot = "\\VaultOfData\AKAMedia\음악\처리됨",
     [string]$ArtistName = "SUNO",
     [string]$FfmpegPath = "",
+    [int]$WavRetrySeconds = 300,
+    [int]$WavRetryIntervalSeconds = 8,
     [switch]$KeepWorkFiles,
     [switch]$Force
 )
@@ -233,6 +235,37 @@ function Invoke-Download {
     }
 }
 
+function Invoke-DownloadWithRetry {
+    param(
+        [string[]]$Urls,
+        [string]$OutFile,
+        [int]$RetrySeconds,
+        [int]$IntervalSeconds
+    )
+
+    $candidates = @($Urls | Where-Object { $_ } | Select-Object -Unique)
+    if (-not $candidates.Count) { return $false }
+
+    $deadline = (Get-Date).AddSeconds([Math]::Max(1, $RetrySeconds))
+    $attempt = 0
+    do {
+        $attempt++
+        foreach ($candidate in $candidates) {
+            Write-Host "WAV 후보 시도 #$attempt`: $candidate"
+            if (Invoke-Download $candidate $OutFile) {
+                return $true
+            }
+        }
+
+        if ((Get-Date) -lt $deadline) {
+            Write-Host "WAV 아직 준비 안 됨. $IntervalSeconds초 후 재시도..."
+            Start-Sleep -Seconds ([Math]::Max(1, $IntervalSeconds))
+        }
+    } while ((Get-Date) -lt $deadline)
+
+    return $false
+}
+
 function Add-MetadataArg {
     param(
         [System.Collections.Generic.List[string]]$Args,
@@ -392,12 +425,7 @@ foreach ($track in $tracks) {
         continue
     }
 
-    $audioOk = $false
-    foreach ($candidate in $wavCandidates) {
-        Write-Host "WAV 후보 시도: $candidate"
-        $audioOk = Invoke-Download $candidate $inputAudio
-        if ($audioOk) { break }
-    }
+    $audioOk = Invoke-DownloadWithRetry $wavCandidates $inputAudio $WavRetrySeconds $WavRetryIntervalSeconds
     if (-not $audioOk) {
         Write-Warning "WAV를 받지 못해서 건너뜀: $title"
         continue