When I install the LAME ACM, and then try to decompress an mp3 in EAC, I get the error "Can't open selected codec!" I tried re-installing the Fraunhofer one and that did not help. I confirmed on a second computer that the breakage happens after installing the ACM. Any ideas on how to fix it?

Right Click the "My Computer" icon, on desktop, or start menu if you are using WinXP

select "Properties"

In the pop up Windows

Select "Hardware" Tab

Click on the "Device Manager" Radio Button

expand the list
Sound, Video and game controllers -> Audio Codec

Right Click "Audio Codecs"

Select "Properties"

Properties Again

Now You'll see the audio codec list

check whether FhG is enabled
Disable LAME if unecessary, only reenable LAME if you want to encode something, coz LAME ACM doesn't support decode

Thanks, disabling the LAME ACM did the trick (although Fraunhofer was still enabled). I installed the LAME ACM for created RIFF-WAVs, I didn't find a way to do this in EAC with just the LAME.exe.

Sorry to revive this thread, but I've got a similar problem. I've tried installing both lame ACM codecs from rarewares (3.97 beta & 3.98 alpha), and they both break mp3 encoding on my machine.

Media player classic just crashes when I try to select mp3 encoding (for webcam), but the weird thing is that device manager (or more correctly 'Microsoft Management Console') will crash as well if I try to open the properties tab in 'Audio Codecs'.

It's really weird. Does anyone know what might be going on?

The last working ACM off rarewares for me is 3.96.1 .. the later ones aren't compiled correctly or incompatible in some way (will crash any program trying to enumerate them. See for instance vdub)

Thankyou eloj. Thought it had to be something simple!

Clearly a compiler issue. I'll address this and upload again later. Thanks for the report.

I've replaced the compiles with VC7.1 compiles that should, I believe, be fine. Please let me know if I'm wrong!!