"Hector Centeno" <hcengar@xxxxxxxxx> writes: > You might want to check this tutorial. I followed it and gave me good results: > > http://mightylegends.zapto.org/dvd/dvdauthor_howto_surround.html Thanks! Apart from letting me know how to create the AC3 from the command line if I should need to do that, it also hinted at a standard recipe for dealing with the LFE channel: Mix all the other channels into one and apply a lowpass filter with a cutoff frequency of 150Hz. I will assume that this is a good method for now and look at the results. /Pelle