help fixing videos audio track

i have a droidx. great phone so far. went to a concert last night and recorded a few songs in hd video. downside is when i went to play em back all i got was the high end and midrange. all the bass drums and everything low is either REALLY low or cut out. i used the camcorder app that came on the phone. it was set to concert and im not sure if thats why it cut it out or i did something else wrong. any ideas on if or how to correct it. buddies band did a great performance and it sucks the sound got screwed up cause the video is good. also any suggestions on other video recording apps or settings for the stock would great.