Noob would be a compliment here. I installed and successfully patched together a project. In trying to open it it says Audacity cannot recognize it. It is a .aup listing so I don’t understand. I looked in each of the elements and there is nothing there to assist me.
I put the project on a memory stick, brought it home, put Audacity on my laptop and can see the saved file but Audacity cannot “recognize” it. I am running windows 7. I attempted to import using the raw data but it does not recognize that either.
ANY suggestions would be appreciated.
Thanks, Greg 
OK. Deep breath. Relax the shoulders.
Audacity does not save sound files. Never has. To get a normal, stand-alone sound file like WAV or MP3, you have to File > Export one.
You have parts of an Audacity Project. You can push those around, too if you know what you’re doing. If you File > Save > MyMusic, you should get a folder called MyMusic_data and a MyMusic.aup file. The aup file tells audacity what to do with all that stuff in the _data folder. The _data folder has your show in kit form. You can transfer a Project wherever you want, but you do have to keep the aup file and the _data folder in the same place or folder for it to open.
Also note that Audacity will not open newer Projects. Audacity 1.3.5 will not open a 2.0.2 Project.
It gets a little more complex. MP3 requires special additional software because of licensing agreements.
Koz