It sounds like a simple question doesn't it? It's one that gets asked over and over, and smartlist sharing refuses to take off.
It's a frustrating thing when you first start, but as you begin to realise the possibilities on offer via MC's library, you'll begin to understand why. One of two things will happen, you'll dabble, be impressed, then set about exploring the possibilities (i think this applies to you) or you'll dabble, not get the expected results right away and say "sod that for a game of soldiers" and turn your back on smartlist creation.
The reason sharing won't take off is, imho, because they are mostly personal. You tailor your searches to suit your individual needs, they have the ability to get quite intricate and can use many custom library fields.
It can help if you go to the library options and edit some of the fields you find you use the most by adding keywords (bottom right of the edit dialogue). FX.. I have things like:
aaa= for [album artist (auto)]
fnn= for [filename (name)]
mt= for [media type]
ft= for [filetype]
I've used those last two for so long I can't remember if they're default or not.
It makes smartlist typing a whole lot quicker. If your search is getting a tad lengthy, I find it helps a great deal to use an external editor instead as it's easier to keep track of what's going on. Remember that as you read from left to right, each search operator filters the list in the order they appear, so in my example above, if we had placed ~n=5
after ~a, the result would be 5 tracks, not 5 albums.
links you might find useful:
"why reinvent the wheel" has some examples to get you rolling.
New Smartlist Limit ruleNew Mix Smartlist RuleNew Expression Evaluator-marko