Here's one more little tip to help with live editing:

I'm one of those guys that like to tweak MIDI files and styles on the gig, while playing. Once you master the Makeup Tools, it's pretty simple to do some basic stuff like adjusting the bass guitar level, or make a snare a bit louder, or adjusting the overall volume of a style or sequence, etc.

Your problem comes when you want to save those changes quickly.

If, like me, you tend to have multiple folders of different collections of SMF's in the My Songs folder, or lots of different 'work in progress' style conversions in different folders in the My Rhythms folder, if you edit a resource live on the fly, there's quite some considerable time spent trying to navigate to the correct folder where the original may sit so you can 'replace' it.

So what I have done is to keep ALL my data in folders within the main folders, and then as you get to the point of creating a Performance to use live, save the resource (style or SMF) to the root level of each folder, and THEN create the Performance.

Now, after you've tweaked that sequence or style, you only need navigate to the root 'My Songs' or 'My Rhythms' folder, and do a save, upon which the 'replace original file' dialog presents itself...

Easy peasy, and that way you don't end up with endless duplicates and complete confusion on the gig trying to save your quick edit.