I converted some audio files as .mp3 and .ogg files and placed them into my Dropbox folder and am now trying to use ES File Explorer to either copy/paste or move the files into the /system/media/audio/alarms or notifications or ringtones folders, though almost each time I do, I receive a message that the file can not be moved. It let me move the files a couple times, though after moving the files, they would not show up as available options under alarms. I do not have an SD card so I'm trying to save the files only to the built in memory. What am I doing wrong? Thanks.