There seems to be an issue using midi out ( CCK) and Network midi
When playing the next note seems to cut off, when changing played mode there is one setting that does not cutoff next note but that slows down tracking, lag.
With wifi, it's always a crapshoot regarding lag, hard getting around that, unless you set up an adhoc network.
Either way, the example lead sound you chose in ableton is a monophonic by default, it will never sound more than one note at a time (unless you changed that). Is it that you want it to be more legato, where the note off of the previous note is sent after the note on of the next note? I had thought I had a certain combination of settings that would do that, but I'm having a hard time finding it. I'll let you know what I discover, it may require a tweak for the upcoming bugfix update.
In the meantime you may find that other instrument types work better, make sure to enable sending pitch bend... and make good use of the shake and tilt capabilities of TJ to give you something you can't get anywhere else.
If you could give me the exact factory preset you used when you got the bursts of extra notes, and/or any custom settings you had set in Edit->Sample, that would be great.
I've found that the most consistently "normal" results can be obtained if you start from the Electric Guitar preset, and turn on sending pitch bend in the prefs.
That said, I have found some issues here that need to be addressed in the next update.... so keep the info coming.