I've been trying to convert AAC audio (from MKV and MP4-files) to WAV to MP3 (using a avisynth script to feed it into VirtualDub, saving it as uncompressed wav, and then using winLAME to convert it to VBR or ABR LAME mp3), like I've been doing for a while, but suddenly my PC won't cooperate anymore. First the resulting MP3's sounded all distorted, as if it played in slow-motion (but it was still the same length as the crisp sounding uncompressed WAV). Tried everything I could think of: I removed all my codecs and filters and conversion software and re-installed all of it, but to no avail. Then I decided to do a clean install. That didn't turn out quite right either (apparently HP gave me defective re-installation software), but after some help from a professional at least it was up and running again. Now I've re-installed most of the necessary codecs, filters and conversion software, but I just can't seem to install a recent version of LAME. Tried re-installing an old version of LAMEACM (3.98.2), but that gave me the same problem when I tried to convert the previously made uncompressed wav using WinLAME (distorted audio on the resulting mp3), so I removed that one again. Newer versions of LAME do not want to install on my Windows Vista x64 system (I use 32-bit VirtualDub and codecs). Tried dropping the DLL in the windows/SysWOW64 folder, and registering them using regsvr32 in command-prompt, but then I get an error (don't know what it would be in English, my system is Dutch, but something like this: "Module 'lame_enc.dll' was loaded, but the entry point dllregistryserver was not found. Make sure that 'lame_enc.dll' is a valid dll- or ocx- file and try again."). And I have no idea how to use the LAME.exe provided in the pack. The only scripts I have ever worked with are those from AviSynth, and even then only scripts I downloaded from the web in which I just have to change the filename and path to make it work. So if I could try using that LAME.exe with scripts, you would have to explain every step to me because I wouldn't even know where to start. Also, since the clean install I have another problem. Now I can't even save the uncompressed WAVs anymore. If I try, I get a large WAV-file like always, only when I try to play it there are no sounds whatsoever, only pure quiet. I use Windows Vista x64, with Comodo Internet Security, Spybot S&D and Windows Defender (maybe one of these 3 protective programs blocks the installation of LAME somehow, but I have no idea), Combined Community Codec Pack (with in ffdshow everything unchecked except for H.264, and in Haali Media Splitter only the default options, like it says in this guide I found: http://kaizoku-fansubs.com/forum/viewtopic.php?id=29 ), AACACM (tried it both with and without this installed), avisynth, VirtualDub 18.104.22.168, WinLAME and Foobar2000 (this one won't even try converting the uncompressed WAVs). What I really want to do in the end is convert the MP4/MKV files (with x264 and AAC) to AVI (with XviD and MP3) and hardsub them (that's why I use VDub, it's the only program I know which does this, and I've been using it for nearly a decade now), so they can play on stand-alone players. Any help would be very much appreciated!