即使媒體保存在文件中（正如錄製情況），媒體文件對於其他應用也是不可用的。要指定文件，必須把該文件插入到MediaStore中。MediaStore是個內容提供者，用來通過設備保存和檢索媒體數據（圖像、視頻及音頻）。要保存文件引用，創建ContentValues對象，把它插入到合適的MediaStore內容提供者中。以下例子在音頻文件中插入合適的元數據，如標題和藝術家：
// generate ContentValues and add appropriate metadata values ContentValues content = new ContentValues; // VERY IMPORTANT! Must reference the absolute path of the data. content.put(MediaStore.MediaColumns.DATA, "/sdcard/AudioExample.3gpp"); content.put(MediaStore.MediaColumns.TITLE, "AudioRecordExample"); content.put(MediaStore.MediaColumns.MIME_TYPE, "audio/amr"); content.put(MediaStore.Audio.Media.ARTIST, "Me"); content.put(MediaStore.Audio.Media.IS_MUSIC, true); // get the Content Resolver ContentResolver resolve = getContentResolver; // insert into the content resolver Uri uri = resolve.insert(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, content); // announce to everyone that cares that it was inserted sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, uri));