>What's the preferred method to obtain them?

http://www.repository.voxforge1.org/downloads/

>I'd like to have subversion read-only access if possible,

the VoxForge repository is the best place to get the audio - since it has no bandwidth limits

>>What's the preferred method to obtain them?

>http://www.repository.voxforge1.org/downloads/

>>I'd like to have subversion read-only access if possible,

>the VoxForge repository is the best place to get the audio - since it has no bandwidth limits

So, is it fine to run something like the following command-line periodically?

wget -I downloads -Nkr -l inf http://www.repository.voxforge1.org/downloads/

Do you know a better option to mimic "svn update" (This command line will always download 7 html files for each directory, even if there's no change in the repository)?

>wget -I downloads -Nkr -l inf http://www.repository.voxforge1.org/downloads/

The -N parm is the most important since it only downloads updates after you make the initial download.  

Why do you want to download all languages?

I don't want to download all languages. At least not now: I think I will use similar command-lines to download a few languages.

I'm mostly interested in male/female classification and speech/non-speech classification, so I'm thinking about downloading a few hours of audio samples for each language.

I would also like to investigate about automatic language recognition, but I don't think I will find time for this.