Format factory is messing with codecs.
Filename: C:\Program Files (x86)\FreeTime\FormatFactory\FFModules\Filters\ac3filter.ax
65> MPC - FLV Source (Gabest)
Filename: C:\Program Files (x86)\FreeTime\FormatFactory\FFModules\Filters\FLVSplitter.ax
CLSID: {C9ECE7B3-1D8E-41F5-9F24-B255DF16C087}
Date: 2011-06-16 | 18:00:00
66> MPC - FLV Splitter (Gabest)
Filename: C:\Program Files (x86)\FreeTime\FormatFactory\FFModules\Filters\FLVSplitter.ax
CLSID: {47E792CF-0BBE-4F7A-859C-194B0768650A}
Date: 2011-06-16 | 18:00:00
67> MPC - Mpeg Source (Gabest)
Filename: C:\Program Files (x86)\FreeTime\FormatFactory\FFModules\Filters\MpegSplitter.ax
CLSID: {1365BE7A-C86A-473C-9A41-C0A6E82C9FA3}
Date: 2011-06-16 | 18:00:00
68> MPC - Mpeg Splitter (Gabest)
Filename: C:\Program Files (x86)\FreeTime\FormatFactory\FFModules\Filters\MpegSplitter.ax
CLSID: {DC257063-045F-4BE2-BD5B-E12279C464F0}
Date: 2011-06-16 | 18:00:00
70> MPC - Video decoder
Filename: C:\Program Files (x86)\FreeTime\FormatFactory\FFModules\Filters\MPCVideoDec.ax
CLSID: {008BAC12-FBAF-497B-9670-BC6F6FBAE2C4}
Date: 2009-08-27 | 00:23:30
Also, try the reset of settings on the second page of the CCCP Settings application. Close MPC-HC before doing this.
Odd that "AAC Decoder" is listed. Did you restart your computer?