Audio not working

Dec 14, 2011
I just installed MIUI 1.12.9 (latest version i found here) on my SGS i9000 and i have a very annoying issue, it has no sound at all throught the back speaker, no ringtones, no music, no youtube, not any audio file, unless i plug my headphones,then i can have sound, but only having my headphones pl***ed. I really loved MIUI and i dont want this bug to let me down, ive search throught many forums and i havent found anyone having this issue, id appreciate your help. Any other info you need, ill be arround.