Problem with EAC3TO

Trying to convert a HDDVD to BluRay through the “doom9-guide” , but keep getting into trouble with the sound-making with EAC3TO.
The guide says to “rename” the audio-file from the evodemux to “audio.dd+” , but the file still is a MPEG-file after the “nameshift” - so when you load up the EAC3TO it can’t find the file at all… and when you choose the “audio.dd+”-file the error says it’s a MPEG , not a dd±file… please help me !!!

Did you solve the problem yet?

I’m guessing the “plus” sign in audio.dd+ is the problem.