(Applies to the current development version. Http://cafe.naver.com/ohsoft/133)

Ocam is set to record in variable frame rate mode by default.

However, Adobe Premiere does not normally support variable frame rates when loading video files in variable frame rate mode, so voice is out of sync.

To record at a fixed frame rate instead of a variable frame rate:
You can set the frame rate mode as shown below in OCAM's menu-click the option and then click on the record-general.

Set it to a fixed frame rate and press the OK button.