Alternative to eac3to or using different audio decoder

[badreligionhead]

Hi,

I've been using eac3to to convert .dts to ac3 (I get the .dts out of Blu-rays .m2ts.) It first tries to use ArcSoft and Sonic decoders, then uses libav if these don't work. I think libav is converting to 2 channels, but I want to keep 5.1 channels.

Can I add audio decoders to eac3to, like ac3filter, or is there a better program for encoding audio?

[badreligionhead]

Actually, I opened the .ac3 in Media player classic and it's 6 channel. That's fine.