Iam sure there is.
How do you do that, right click file open with? then tick the box to use the same program to open the files?
right click on a file type (say .mp3).
properties
opens with...
(change)
then select the mpc.exe file.
do this for all the file types and you are guaranteed to get files to automatically open using mpc.
Dont forget ffdshow filter though. Thats the fun part that allows you to change virtually every picture property, including "upscaling", which is a big buzz word these days.
