Media portal had trouble noticing .asf files so i added .asf in config.exe. i have sets of asf files in a folder, they have proper naming conventions i.e Video_1.asf, Video_2.asf etc, it seems media portal is stacking them so instead of me seeing individual parts its showing me just one file (nice feature) but i keep getting error "stacked movie. please select disc to play". whats that suppose to mean? how to fix this?