在哪里存储上传的文件（声音，图片和视频）

A while a go I had to developed a music site that allowed audio files to be uploaded to a site and then converted in to various formats using ffmpeg, people would then download the uploaded audio files after purchasing them and a tmp file would be created and placed at the download location and was only valid for each download instance and the tmp file would then get deleted.A while a go I had to developed a music site th