GoToMeeting is an online meeting, desktop sharing, and video conferencing software that allow the user to meet with other computer users, customers, clients or colleagues via the Internet in real time. The recording file format of GoToMeeting is WMV with G2M3/G2M4 Codec which is only compatible with GoToMeeting. So it is impossible to play GoToMeeting recording WMV on most famous players and devices such as iTunes, Windows Media Player, QuickTime, iPhone, iPad, Android, Xbox, PlayStation, etc or edit it in iMovie, Final Cut Pro, Adobe Premiere Pro, Sony Vegas and so on.
If you want to play this kind of file in QuickTime, you'd better to convert them to MP4 or MOV.
It also applies to convert the files to WMV, MKV, FLV, AVI, MP3, WAV, etc.