You're correct, in that it's not the first report about the GOM Player. Not here, or at Lavasoft. Have a look at this thread from the Lavasoft Forum. False positive or real issue?."

Additionally, I participated in a thread this past August, where another member had similar concerns. After reading their original post, I downloaded and scanned the GOM Player with 3 different scanners. None of the three, detected a problem.

That said, I suggest the "detected" file be uploaded to Virus Total, to be absolutely sure it is (or isn't) a false positive. I recommended to the other member, to let Lavasoft know, if it turned out to be a false detection. I would suggest you do the same.

If you run into any problems along the way, please don't hesitate to post back and ask.

Best of luck..