Don't give up quite yet. Not a very good idea to mix codecs. They could conflict. Also as far is Shark007 selecting 7 speaker output instead of 2 is due to windows settings. This is where shark defaults the speaker configuration from. Also with captions/subtitles, Shark has many possibilities depending on which codec you're using for you content. I'd have to see your settings to troubleshoot. Can still try to figure all that out if you wish. Again just PM me and maybe we can meet in the chat room. Even better, we could try remote support.