Audacity made silenced half the audio in the project

I’ve been working on a project where I am mixing about a dozen songs into one continuous mix. I opened up the project today and boy was I surprised to find that half my work had been converted to silence! Strangely, it is almost exactly the first half of the project that has been silenced.

I don’t know if this is a bug in audacity or if I just did something stupid. I have received no error messages but I don’t even know how I would go about ‘accidentally’ selecting and silencing all those tracks. Regardless I would very much like to recover my work. Help??

I am using Audacity 2.0.2 on a Windows 7 machine. I don’t remember if I installed from an exe or zip, it has been a long time.

Oh I checked project dependencies and it says the project is self-contained. I don’t remember Audacity asking me about this but I did set this for another project a while ago so it’s probably true.

Thanks for your help!

The current version is 2.0.5 and is available here:

There is a known problem (listed in the release notes) that Projects with 2^31 samples or more (just over 13.5 hours at 44100 Hz) will not re-open correctly. Higher sample rates mean proportionally shorter times - so just over 6 hours at 96,000 Hz. Workaround: Before saving or closing the project, export to audio files of appropriate size, or cut and paste sections of audio containing less than 2^31 samples to new Audacity projects and save those.

OK, but this is 90 minutes of sound tops. I have also worked on mixes like this before without encountering this issue.

Well you must be right, I downloaded the latest alpha and opened the project with that and everything was there. whew

Thanks for pointing me in the right direction!

Out of interest, were you using a high sample rate?
As concern, have you exported a backup copy in WAV format? (WAV {or FLAC} files are extremely robust and make excellent backups)

My default sample rate is 44100.

I have exported to WAV, don’t worry!

I don’t know why you got the problem with 2.0.2, but there have been a lot of bug fixes since then. 2.0.6 is due out soon, so keep an eye on: Audacity ® | Downloads, or register your e-mail address at the bottom of the Audacity home page ( if you want to be notified when it is released.