In SefTranslate Pro and commerce possible add language prefix for web site translate like at stratomaniac.com/fr/
Every buy SefTranslate has limit license to one site, for next you need buy new license, or you may buy Developer member ship http://ordasoft.com/membership-page.html
On ours site we haven't sef translate version - because we have very big site, so add 7 language will huge ours site in 7 times - but ours host provider forbid that,. So for Turn on sef Translate - we need move to other more expensive hosting
Please check SEF Translate demo on ordasoft.com/realestatemanager2/index.ph...tton=1&Itemid=55
there are we use aJax mode - because that you not see language prefix for translated pages.
For see language prefix for translated web page for Sef Translate - you will need configure and turn on redirect method