A Surfer’s Dream

I am positive that it plays video put I need to know how to put videos onto it. The demo video **Surf’s Up Trailer** has some detailed information. It does not provide any categories or anything but it says, AVC Baseline, AAC, and the name is Surf’s Up Trailer.MP4. Does that mean I have to convert it into a AAC file or a MP4 file?

AAC is an audio file, mp4 is a video file.

Sony NWZ-S615F supports both mp4 and m4v video files:

http://reviews.cnet.com/mp3-players/sony-nwz-s615f-2gb/4507-6490_7-32591617.html?tag=specs

As you said the file name is Surf’s Up Trailer.MP4 it should be ready to play.