Trouble with mp3 encoding

I am using a Mac OS X v10.6.8. I just downloaded Audacity 2.0.3 from here →

I am trying to save a music file as an mp3. Audacity told me I needed libmp3lame.dylib to do this.
I went here →
Which took me here →
and downloaded “Lame_Library_v3.98.2_for_Audacity_on_OSX.dmg” which is listed under “For Audacity 1.3.3 or later on Mac OS X 10.4 and greater (Intel or PPC),and Audacity 1.2.5 on OS X 10.4 and later (Intel)” about 2/3 down the page.
I went through all of the installation instructions and got the happy “Successfully Installed” message, but now Audacity is giving me the following message:
“Unable to open target file for writing.”

I even re-checked my steps with this tutorial->

What do I do now? And also, where did it save the “lame library” stuff? I’m not sure where it was saved or even what it is called.

I’m sure you’ve probably answered this question before, so I appreciate your time and consideration!! Thanks!
((and yes, did try turning it off and on again.))

All sounds good so far…

You’ve probably used an invalid file name. Avoid using slashes and colons in file names - I’m not sure if there are other invalid characters for filenames on Mac, but it is generally good practice to stick with numbers and letters.

Phew!! The problem turned out to be quite simple.I was worried I would have some kind of Mac Fiasco. Thank you very much for your response!!
All I had to do was change the destination folder.

I’ve posted numerous times about this.

The only invalid character on Mac is colon, but there are three bugs in Audacity that cause characters to fail where they should not do so. Please see Error: Could not save project..not writable...disk full. - #4 by Gale_Andrews .

Please make sure you are not running Audacity from the DMG, which might explain what happened - Audacity cannot write to the DMG installer.

To /usr/local/lib/audacity .