I already have a ton of music on my computer, I just need it to be portable, and I really only need 8 hours of music on it. What is the cheapest, most reliable, easiest to use device? Can I load songs into several playlists? Does it have a simple menu that lets me select from multiple playlists? Is it plug and record - just plug into a Windows computer, and record the songs I want on it quickly and easily, automatically converting the file format?