Audio Problem Please Help! - NO VOICE WHEN PLAYING FILE

Hey guys
I just finished recording a cassette onto my laptop with Microsoft Plus! Analog Recorder and now when i try to play say a video or audio file the background sound is strong but the voice is very weak.

Can anyone help me? i think its something to do with the settings but im not sure. I have a Realtek AC97 audio driver. Im a newbie so pls keep it simple.

Much Appreciated

odddly enuff, i have done this before. make sure the plug is in all the way. if it is not, you get “karaoke” like audio.

i just recently captured audio too, and the jack was very hard to get it in all the way. I thought i was gonna break the damn thing.