diff --git a/main.go b/main.go
index 9f9c1d4..c750756 100644
--- a/main.go
+++ b/main.go
@@ -442,7 +442,7 @@ func ripTrack(track *task.Track, token string, mediaUserToken string) {
 			counter.Unavailable++
 			return
 		}
-		fmt.Println("Unavailable, Try DL AAC-LC")
+		fmt.Println("Unavailable, trying to dl aac-lc")
 		needDlAacLc = true
 	}
 	needCheck := false
@@ -463,7 +463,7 @@ func ripTrack(track *task.Track, token string, mediaUserToken string) {
 	var Quality string
 	if strings.Contains(Config.SongFileFormat, "Quality") {
 		if dl_atmos {
-			Quality = fmt.Sprintf("%dkbps", Config.AtmosMax-2000)
+			Quality = fmt.Sprintf("%dKbps", Config.AtmosMax-2000)
 		} else if needDlAacLc {
 			Quality = "256Kbps"
 		} else {
@@ -549,6 +549,10 @@ func ripTrack(track *task.Track, token string, mediaUserToken string) {
 		_, err := runv3.Run(track.ID, trackPath, token, mediaUserToken, false)
 		if err != nil {
 			fmt.Println("Failed to dl aac-lc:", err)
+			if err.Error() == "Unavailable"{
+				counter.Unavailable++
+				return
+			}
 			counter.Error++
 			return
 		}
@@ -903,9 +907,9 @@ func ripAlbum(albumId string, token string, storefront string, mediaUserToken st
 	var Quality string
 	if strings.Contains(Config.AlbumFolderFormat, "Quality") {
 		if dl_atmos {
-			Quality = fmt.Sprintf("%dkbps", Config.AtmosMax-2000)
+			Quality = fmt.Sprintf("%dKbps", Config.AtmosMax-2000)
 		} else if dl_aac && Config.AacType == "aac-lc" {
-			Quality = "256kbps"
+			Quality = "256Kbps"
 		} else {
 			manifest1, err := ampapi.GetSongResp(storefront, meta.Data[0].Relationships.Tracks.Data[0].ID, album.Language, token)
 			if err != nil {
@@ -913,7 +917,7 @@ func ripAlbum(albumId string, token string, storefront string, mediaUserToken st
 			} else {
 				if manifest1.Data[0].Attributes.ExtendedAssetUrls.EnhancedHls == "" {
 					Codec = "AAC"
-					Quality = "256kbps"
+					Quality = "256Kbps"
 					//fmt.Println("Unavailable.\n")
 				} else {
 					needCheck := false
@@ -1180,7 +1184,7 @@ func ripPlaylist(playlistId string, token string, storefront string, mediaUserTo
 	var Quality string
 	if strings.Contains(Config.AlbumFolderFormat, "Quality") {
 		if dl_atmos {
-			Quality = fmt.Sprintf("%dkbps", Config.AtmosMax-2000)
+			Quality = fmt.Sprintf("%dKbps", Config.AtmosMax-2000)
 		} else if dl_aac && Config.AacType == "aac-lc" {
 			Quality = "256Kbps"
 		} else {
@@ -1945,7 +1949,7 @@ func extractMedia(b string, more_mode bool) (string, string, error) {
 						currentBitrate, _ = strconv.Atoi(current)
 					}
 					if bitrate > currentBitrate {
-						aacQuality = fmt.Sprintf("AAC | 2 Channel | %d kbps", bitrate)
+						aacQuality = fmt.Sprintf("AAC | 2 Channel | %d Kbps", bitrate)
 					}
 				}
 			} else if variant.Codecs == "ec-3" && strings.Contains(variant.Audio, "atmos") { // Dolby Atmos
@@ -1964,7 +1968,7 @@ func extractMedia(b string, more_mode bool) (string, string, error) {
 						currentBitrate, _ = strconv.Atoi(current)
 					}
 					if bitrate > currentBitrate {
-						atmosQuality = fmt.Sprintf("E-AC-3 | 16 Channel | %d kbps", bitrate)
+						atmosQuality = fmt.Sprintf("E-AC-3 | 16 Channel | %d Kbps", bitrate)
 					}
 				}
 			} else if variant.Codecs == "alac" { // ALAC (Lossless or Hi-Res)
@@ -1986,7 +1990,7 @@ func extractMedia(b string, more_mode bool) (string, string, error) {
 				split := strings.Split(variant.Audio, "-")
 				if len(split) > 0 {
 					bitrate, _ := strconv.Atoi(split[len(split)-1])
-					dolbyAudioQuality = fmt.Sprintf("AC-3 |  16 Channel | %d kbps", bitrate)
+					dolbyAudioQuality = fmt.Sprintf("AC-3 |  16 Channel | %d Kbps", bitrate)
 				}
 			}
 		}
@@ -2007,7 +2011,7 @@ func extractMedia(b string, more_mode bool) (string, string, error) {
 		if dl_atmos {
 			if variant.Codecs == "ec-3" && strings.Contains(variant.Audio, "atmos") {
 				if debug_mode && !more_mode {
-					fmt.Printf("Debug: Found Dolby Atmos variant - %s (Bitrate: %d kbps)\n",
+					fmt.Printf("Debug: Found Dolby Atmos variant - %s (Bitrate: %d Kbps)\n",
 						variant.Audio, variant.Bandwidth/1000)
 				}
 				split := strings.Split(variant.Audio, "-")
@@ -2025,12 +2029,12 @@ func extractMedia(b string, more_mode bool) (string, string, error) {
 						return "", "", err
 					}
 					streamUrl = streamUrlTemp
-					Quality = fmt.Sprintf("%s kbps", split[len(split)-1])
+					Quality = fmt.Sprintf("%s Kbps", split[len(split)-1])
 					break
 				}
 			} else if variant.Codecs == "ac-3" { // Add Dolby Audio support
 				if debug_mode && !more_mode {
-					fmt.Printf("Debug: Found Dolby Audio variant - %s (Bitrate: %d kbps)\n",
+					fmt.Printf("Debug: Found Dolby Audio variant - %s (Bitrate: %d Kbps)\n",
 						variant.Audio, variant.Bandwidth/1000)
 				}
 				streamUrlTemp, err := masterUrl.Parse(variant.URI)
@@ -2039,7 +2043,7 @@ func extractMedia(b string, more_mode bool) (string, string, error) {
 				}
 				streamUrl = streamUrlTemp
 				split := strings.Split(variant.Audio, "-")
-				Quality = fmt.Sprintf("%s kbps", split[len(split)-1])
+				Quality = fmt.Sprintf("%s Kbps", split[len(split)-1])
 				break
 			}
 		} else if dl_aac {
@@ -2059,7 +2063,7 @@ func extractMedia(b string, more_mode bool) (string, string, error) {
 					}
 					streamUrl = streamUrlTemp
 					split := strings.Split(variant.Audio, "-")
-					Quality = fmt.Sprintf("%s kbps", split[2])
+					Quality = fmt.Sprintf("%s Kbps", split[2])
 					break
 				}
 			}
diff --git a/utils/runv3/runv3.go b/utils/runv3/runv3.go
index 699fe52..1bf3404 100644
--- a/utils/runv3/runv3.go
+++ b/utils/runv3/runv3.go
@@ -25,6 +25,7 @@ import (
 	"net/http"
 	"os/exec"
 	"strings"
+	"sync"
 
 	"github.com/grafov/m3u8"
 	"github.com/schollz/progressbar/v3"
@@ -166,7 +167,7 @@ func GetWebplayback(adamId string, authtoken string, mutoken string, mvmode bool
 			continue
 		}
 	}
-	return "", "", nil
+	return "", "", errors.New("Unavailable")
 }
 
 type Songlist struct {
@@ -355,35 +356,56 @@ func ExtMvData(keyAndUrls string, savePath string) error {
 		fmt.Printf("创建文件失败：%v\n", err)
 		return err
 	}
-	defer tempFile.Close()
 	defer os.Remove(tempFile.Name())
-
+	defer tempFile.Close()
 	// 依次下载每个链接并写入文件
 	bar := progressbar.DefaultBytes(
 		-1,
 		"Downloading...",
 	)
 	barWriter := io.MultiWriter(tempFile, bar)
-	for _, url := range urls {
-		resp, err := http.Get(url)
-		if err != nil {
-			fmt.Printf("下载链接 %s 失败：%v\n", url, err)
+	pipeReaders := make([]*io.PipeReader, len(urls))
+	var wg sync.WaitGroup
+	//最多同时5个下载请求
+	sem :=make(chan int, 10)
+	go func(pipeReaders []*io.PipeReader) {
+    	for i, url := range urls {
+    	    pr, pw := io.Pipe()
+    		pipeReaders[i] = pr
+    		sem <- 1
+    		wg.Add(1)
+    		go func(i int, url string, pw *io.PipeWriter) {
+    		    //fmt.Printf("协程 %d 开始\n", i)
+    			defer wg.Done()
+    			resp, err := http.Get(url)
+    			if err != nil {
+    				// 出错时，通过 CloseWithError 通知后续读取端
+    				pw.CloseWithError(err)
+    				fmt.Printf("下载 %s 失败: %v\n", url, err)
+    				return
+    			}
+    			defer resp.Body.Close()
+    			// 将 HTTP 响应体通过 pipe 写出（实现流式传输）
+    			_, err = io.Copy(pw, resp.Body)
+    			// 将可能的错误传递给 pipe
+    			pw.CloseWithError(err)
+    		}(i, url, pw)
+    	}
+    }(pipeReaders)
+	// 按顺序读取每个 pipe 的数据并写入文件
+	for i := range len(urls) {
+	    <-sem
+	    //fmt.Printf("写入 %d 开始\n", i)
+		if _, err := io.Copy(barWriter, pipeReaders[i]); err != nil {
+			fmt.Printf("写入第 %d 部分失败: %v\n", i+1, err)
 			return err
 		}
-		if resp.StatusCode != http.StatusOK {
-			fmt.Printf("链接 %s 响应失败：%v\n", url, resp.Status)
-			return errors.New(resp.Status)
-		}
-		// 将响应体写入输出文件
-		_, err = io.Copy(barWriter, resp.Body)
-		defer resp.Body.Close() // 注意及时关闭响应体，避免资源泄露
-		if err != nil {
-			fmt.Printf("写入文件失败：%v\n", err)
-			return err
-		}
-
-		//fmt.Printf("第 %d 个链接 %s 下载并写入完成\n", idx+1, url)
+		pipeReaders[i].Close() // 及时关闭 read
+		//fmt.Printf("写入 %d 成功\n", i)
 	}
+
+	// 等待所有下载任务完成
+	wg.Wait()
 	tempFile.Close()
 	fmt.Println("\nDownloaded.")