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Question is of course why that feature doesn't work for you. The mention of a "previously defined path" in my case indicates that I probably pointed Audacity to LAME once before.
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Or that /opt/local/lib somehow and all of a sudden disappeared from that search path. What you're seeing suggests that Audacity (all of a sudden?) started trying to load libmp3lame via the standard system library search path, which probably doesn't include /opt/local/lib.
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A plug-in installer for Nyquist now provides a file browser for selecting ‘.NY’ files to install.Type to Create a Label is now off by default.Audacity mod-script-pipe for driving Audacity from Python now comes with Audacity and can be enabled via preferences.There is a new ‘Select’ button in the track panel to select the whole track.Audacity now includes the LAME mp3 encoder.If you go to Libraries Preferences you will see that the option to locate the library is no longer there and the dialog tells you what version of LAME is built-in. With previous releases it was necessary to download and locate the LAME library as an optional extra. The LAME library, which is needed for exporting MP3 audio files, is now built-in to Audacity on Windows and macOS as a part of the application. The updated version now comes with the LAME mp3 encoder.
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