Sequentially playing library movie clips

The situation I had called for sequential & frequently changing .swf's
that were Public Service Announcements rather than library movie clips.
All I have to do is change the swf titles in the array and make sure
they are in the same directory and walla... (could be done with an XML
file too, probably easier, but that's for the future)

But thanks to help from this forum here's what I got working.
May be of some value to you...


In the Master.swf (only 1 frame)
/////////////////////////////////////////////
if (init == undefined) {
var aSWFs:Array = new Array();
var nCurSWF:Number = 0;
var aSWFmcs:Array = new Array();

// ----------------- Add desired PSA swf's to the array
aSWFs.push("Announce1.swf");
aSWFs.push("Announce2.swf");
aSWFs.push("Announce3.swf");
// --------------------- end of array.push()ing

var nSWFs:Number = aSWFs.length;
for (var n=0; n<=nSWFs; n++) {
aSWFmcs.push(createEmptyMovieClip("swf"+n, n));
}
var mcl:MovieClipLoader = new MovieClipLoader();
var Listen:Object = new Object();
Listen.onLoadInit = function(target) {
nCurSWF++;
if (nCurSWF < nSWFs) {
// load the next swf
mcl.loadClip(aSWFs[nCurSWF], aSWFmcs[nCurSWF]);
} else {
// done loading... start playing
_global.nClips = nSWFs - 1 // to make it zero based
_global.nCur = 0
_level0.swf0.gotoAndPlay(2);
}
}
mcl.addListener(Listen);
mcl.loadClip(aSWFs[0], aSWFmcs[0]);
init = 1;
}


Then in each PSA frame 1 has a 'stop();'
and the last frame has ActionScript of:
(change the 'else' to stop(); if you don't want them to loop)
/////////////////////////////////////////////////////////////////////
// if the Current SWF is not the last increment nCurSWF,
// else set it to the start
if (_global.nCur < _global.nClips) {
_global.nCur++;
} else {
_global.nCur = 0;
}
_level0["swf"+_global.nCur].gotoAndPlay(2);
stop();

2m, you're right of course, when I saw his code I realized that he attached the movieClip, and the mistake was rather in his using a string variable to hold the name of the movieClip, and then trying to access properties of the movieClip with a simple dot notation, not evaluating the string... But somehow I was too lazy to point that out :-)
As for the onEnterFrame attached to _root, I don't have a problem with that. It's not my personal preference, but rather that I wasn't sure how it will work in detail, specifically the timing: is it always in the order _root.onEnterFrame, _root actions, attached movieClip actions?
Wanting something that works for sure I went for the variant I knew ...
Besides, too few people know setInterval, which is much more flexible than onEnterFrame, so see this as a didactical move on my side :-)))

You did the right thing it seems. Your problem might stem from the fact that _totalframes is unknown until the movie clip is fully loaded. If you use the MovieClipLoader class, you have a onLoadInit event that fires, when your clip is loaded and it's _totalframes is known.
If I would do that I wouldn't use an onEnterFrame, but would set an interval, that would periodically check how far the clip has played, and then unload it and load the next one.If you fire this off at the movie's frame rate, it's the same as onEnterFrame, but the control stays in one defined place (in main.swf scope) and doesn't pass to one of the loaded clips. This makes it easier to program the load and unload actions.

I'd say you are very far in the right direction - if not allready there. It seems you must have made a mistake in the actual implementation as the concept should work. I don't know why you wouldn't attache more code, but that would help solving the problem.