I have a realtive big mp3 file (54 minutes, 105Mb). When I try to open it with Audacity 2.05, the loading of the file stop and nothing happen any more: I have to press the stop or the cancel button… I have tried it in debian jessie and ubuntu 14.04, using pulseaudio or jack: the behaviour is ever the same. I have tried in audacity 2.05 in windows and all seems to work… please there is a way to debug the problem?
All Audacity versions have two periods (dots) between the numbers.
So from your description, the progress dialogue for the MP3 import freezes up? How far does it get?
Does the Linux machine have any disk space? Audacity expands all imports to 32-bit float PCM by default, so for a stereo 54 minute file at 44100 Hz project rate you need over 1 GB merely to import the file, then another 1 GB or so for each edit on the file.
We can’t debug it further without information about the file. What does MediaInfo say about it? You will probably be able to install it from your repository if you don’t already have it.
It is not an MP3 file if it contains PCM signed 16-bit little-endian. That is lossless audio. Have you looked at the file in a hex editor? If it says “RIFF” and “WAVEfmt” at the top, you could try renaming it from MP3 to WAV.
If that is the problem, yes on Windows you can import a WAV misnamed as MP3 and Audacity’s PCM importer (libsndfile) will still import it, but you can’t do that on Linux.
The reason is that there is a bug in libsndfile where MP3 files with duplicated metadata tags crash libsndfile and thus crash Audacity. We have patched the libsndfile that Audacity is built from on Windows, and so on Windows we allow libsndfile to take WAV files misnamed as MP3.
But on Linux, Audacity supplied by distributions will probably be built with the system libsndfile which has this bug. Therefore to avoid crashes we don’t allow libsndfile to take WAV files misnamed as MP3 on Linux.
As an alternative to renaming the MP3 files to WAV you could use FFmpeg to import the file, if the Audacity builds you have support FFmpeg. To use FFmpeg in Audacity, File > Import > Audio…, choose “FFmpeg-compatible files” in the file type selector, then select and “open” the file.
I meant you could install MediaInfo from your repository. It’s an application that supplies detailed file type information. But VLC has probably answered the question.