Hi ... have a bit of a strange problem. Have constructed an audio mixer with WMF11. Mixing is done by summing the uncompressed 16-bit shorts from 2 IWMsyncREader objects, adding the results and feeding the results into 1 IWMWriter. Thereby I am taking care of clipping by making sure that the resulting sum of adding the shorts is never larger than the original signal of any of the 2 sources (is done by fading out one and fading in the other simultaneously). this works fine, no problem. However as soon as a live recording comes along (audience rumour, applaus etc ), results go beserk. Am I missing something here ??? As far as I can assess results, the incoming live recording sounds fine, but it seems to kill the results on the song fading out. Basic question: are live recordings something to be taken into account (to be handled differently ???) in DSP processing ??? thx .. Steve -- thx in advance .. Ssteve