Hello, I recently upgraded the ZDMC from 17 to 18. When playing wmv files with ZDMC's built-in player, the audio and video are out of sync and I've tried many times. And this issue hasn't happened with the ZDMC 17, but in both versions ZDMC cannot accurately deliver the original resolution and frame rate of a wmv file. Knowing about this problem; is there anyone who can help. Thank you in advance for your answers.