If you are one of the thousands who has had your iPod  snatched unwittingly, here's a mp3 player  that is guaranteed to fool the most clever thief. This snazzy cassette mp3 player  is literally a standard cassette with a built-in mp3 player. Discussed on technabob , these retro  looking cassettes come with a seven button interface, an SD card slot and can be recharged by a USB cable. This product will be available soon. No word on pricing just yet.