解决了语音上传到问题，接下来要解决下载播放问题

Pods/Qiniu/QiniuSDK/Utils/QNUrlSafeBase64.m

@@ -0,0 +1,29 @@
+//
+//  QiniuSDK
+//
+//  Created by bailong on 14-9-28.
+//  Copyright (c) 2014年 Qiniu. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+#import "QNUrlSafeBase64.h"
+
+#import "QN_GTM_Base64.h"
+
+@implementation QNUrlSafeBase64
+
++ (NSString *)encodeString:(NSString *)sourceString {
+    NSData *data = [NSData dataWithBytes:[sourceString UTF8String] length:[sourceString lengthOfBytesUsingEncoding:NSUTF8StringEncoding]];
+    return [self encodeData:data];
+}
+
++ (NSString *)encodeData:(NSData *)data {
+    return [QN_GTM_Base64 stringByWebSafeEncodingData:data padded:YES];
+}
+
++ (NSData *)decodeString:(NSString *)data {
+    return [QN_GTM_Base64 webSafeDecodeString:data];
+}
+
+@end