Late last nite I loaded 470-something songs from my computer... which don't show up in "Play" but are found listed in the Delete list of all files stored. Have used less than half of capacity and have less than 20 pics stored( which work well)How do I get the music to the "play" list and hear them. The first song i recorded does play and is in the "music play" section but i was still figuring which buttons did what with the"Instruction Manual" PDF . Not sure what i pushed at 3am.