I am trying to use http://code.google.com/p/amazon-s3-php-class/ to force-dowload files from AWS S3. I have an mp3 that I want people to \"play\" or \"download.\" By default
If you are using a library like Tarzan AWS, you can add meta headers, that amazon will include when the file is retrieved. Check out the meta parameter in the update_object function here, for example:
http://tarzan-aws.com/docs/2.0/files/s3-class-php.html#AmazonS3.update_object