[LAU] Annoying click in sox + lame pipe

I have a sox + lame pipe of this kind:[1][2] sox sin.mp3 -t wav - trim 10 20 fade t 2 10 2 | lame - -r out.mp3 Everything is fine but the final mp3 file[3] always has an annoying click at the beginning. This has somewhat to do with the pipe as it doesn't happen if I create a wave file from sox. Nor does it happen if I use sox only: sox sin.mp3 out2.mp3 trim 10 15 fade t 2 10 2 Yet the latter needs sox compiled with mp3 support, which is less portable than the above. I'm not sure how to look into this so any suggestion is welcome. Lorenzo [1] No I can't use better, non-evil formats this time [2] No, I haven't the uncompressed source, so I can only use the mp3 as input: life sucks. [3] Here: BUT ATTENTION!! There is a click at the beginning so turn volume right down: http://lorenzosu.altervista.org/temp/dump/out.mp3 The source file here: http://lorenzosu.altervista.org/temp/dump/sin.mp3