You have to find the differences between sets of two pictures apparently identical. The faster and better you do, the more points you get.

MP3Producer is a powerful full-featured CD ripper and MP3,WMA,OGG encoder. ID3v1,2 tag; FreeDB(CDDB) support; Extract CD Segment function; multilingual interface; MPEG1,MPEG2; constant, variable, average bitrates (8-320 kbps); flexible settings.

Make your own ringtones using any MP3, WMA file or Audio CDs. Unlimited access, no monthly subscriptions or hidden fees, no need for cable, Infrared, or Bluetooth. Most phones supported on most networks worldwide.