Thank you for the replies !
Here is the capx it is made with the new beta, ( I also tested with the last stable but not worked too )
twentysound.com/test1.capx
As you can see its a simple game, on the browser it works extremely good. But on android no sound at all, just the error I mentioned. I would be very glad if someone manages to make it work with sound with phone gap on android ( If you got the working eclipse project that would be great )
Also I found a bug (But it is not important to games, what is important to games is sound) with the beta and maybe the stable too, they are generating backup files with up to 8 Gb !! Wich makes my system to freeze if I enable the backup function, take a look at that.
Thanks, I hope the best for this software !