windows 7? first off delete all your codecs, then in windows playback devices, set to two channel audio, not surround. download the new Lav filters, and install. configure the Lav audio filter for all the codecs, DTS HD, etc. Now In Media Player Classic, go to Add external filters, add Lav Audio Codec, set to prefer. Add Lav video filter, set to prefer. Go the internal filters, and uncheck the file formats that use like MKV, M2TS, etc.Restart, it should work. AMD drivers are always a pain.