How to open project with multiple .au files?

Hi everyone,

I have many many .au files in seperate folders labelled e00, d00, d01, d02, etc. When I recorded the project in Audacity, it was originally all 1 file. I can’t seem to be able to open the original project. All I have are the individual .au files in seperate folders. Any advice?

Yes, open the .aup file instead - see this page in the Audacity Manual: