[SOLVED] Audio: supported ogg specific format?

I have converted a stereo wav file to a mono ogg one.

But when I try to load it, a clueless exception happens:

com.jme3.asset.AssetLoadException: An exception has occured while loading asset: Sounds/Effects/UI/220183__gameaudio__click-casual.mono.ogg (Buffer)
at com.jme3.asset.DesktopAssetManager.loadLocatedAsset(DesktopAssetManager.java:261)
at com.jme3.asset.DesktopAssetManager.loadAsset(DesktopAssetManager.java:373)
at com.jme3.audio.AudioNode.<init>(AudioNode.java:163)
at com.jme3.audio.AudioNode.<init>(AudioNode.java:144)

I tried to use in the same folder the “foot steps” ogg file from jme testdata and it loaded and played perfectly.

My guess is that the jme ogg decoder is of an old version, and my fresh converted ogg file is incompatible with that decoder.

So I need to know how you ppl convert files to an ogg format that jme will accept?

found it…
the default conversion on linux, for ogg, was “flac”
to convert properly this is the command (mono audio, both channels get mixed into one, and vorbis codec):

avconv -i file.wav -ac 1 -acodec libvorbis file.ogg