You will not be able to delete the music files on your Samsung K3 player unlike the Apple Ipod and Creative Zen. It has to be done through the Samsung Media Studio. In addition, the text files and photos must also be delete through the Samsung Media Studio. There are no edit functions available on the Samsung K3 player except for browsing and playing purposes. Therefore, Samsung need to improve their firmware to allow us to have some basic edit functions, like delete and moving of files and creating playlist on the player itself.