[LAU] Hi everybody and issue with MIDI

It's the first time I write to this list. Hi, I'm Kiko from Argentina. I play guitar and try to produce my music with FLOSS. I have a Fishman Tripleplay MIDI controller and I can connect it through ALSA with almost any problem, unless it sounds "flat", all the velocity messages are 64, without dynamics. When I see all the MIDI messages, there are changes in CC30, in channel 8, could be the velocity info that is not routed well. Maybe the VST midiconverter3 from Piz midi plugin collection can rout it to velocity, but I can't load it in linux. Any clue? Thank you all, sorry for my tarzanian english, I do my best.