Daemon tools lite question?

I downloaded daemon tools lite lastnight adn i downloaded a game. I mounted the ISO and it worked fine lastnight. I went to play it today and after i click Auto Run.EXE and click "play" on the game menu it says "Please insert the correct CD-ROM, select OK adn restart application." I have deleted and re downloaded adn re installed the game but it stll says the same thign. I am new to this adn have no clue what to do.