On the solo issue the idea of a dedicated Solo button is interesting, but once you get comfortable with tehcurrent setup I think it is easier. You just click the track to highlight it and then hit solo, if you want to chage tracks to solo another just click the number on that track, one click and you can go from one solo-ed track to another. Hold down shift and add to it to hear more than one. Realy the same thing if you think about it.

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