Update:
So I uninstalled Coreplayer again, made sure to delete all files, then I also installed and ran Sktools Lite and cleaned my Q (wow, works great!). Ok, so then I installed tcpmp off of Rudeboy's page along with the AAC code. Then I went into tcpmp and undid all file associations, reboot, ran sktools again, reboot, and now my videos play with Media Player - yay!!!
So, I still have tcpmp installed on my Q in case I want to use it to play other videos because for some reason it just wont play my Q's recorded videos. Anywho, I'm happy
~maria