Great work-a-round SScorpio! Worked like a charm on my install of w7 ult x64. Thx a whole bunch for sharing. Update: With vista x64, whenever I updated tdu with patch 1.66a or install the bonus carpack (which includes 1.66a) I would lose ingame sound. Samething with w7 ult x64. Using ALchemy with vista x64 restored the ingame sound. Now I just installed the bonus carpack with patch 1.66a in w7 ult x64 and once again have ingame sound.