As to arrays, are they so slow that they should be avoided in JScript Panel scripts?

You probably should not try to use asm.js code in scripts though.

I'll take a look at the last.fm website later and see if it's an easy fix. If it's just a few lines of code, I can post an update.

Thumbs: Download limits have been increased and the default has been reset to 10. Also, automatic downloads are now an option but turned off by default. Simply use the right click menu to enable.

Automatic downloads only trigger when the following conditions are true:

• a new track begins and the artist is different from the previous track
• there are no existing images. Use the Download now option if you want to check for more.
• the last automatic check was more than an hour ago. Timestamps are maintained by the script to prevent unnecessary requests if there were no images found previously.

Musicbrainz: Now attempts to retry up to 5 times on failure.

Unlike previous versions, updates must be downloaded manually. Just extract the whole zip contents in to your existing js_marc2003 folder and overwrite the old files when prompted. On the rare occasion a script inside a panel needs updating, it will be mentioned on the releases page.

I'll take a look at the last.fm website later and see if it's an easy fix. If it's just a few lines of code, I can post an update.

 
//Download Image
function download()
{ 
try {
if (lfm_folder=="<default>") {folder = fbfolder + "\\" + p.clean_filename(p.artist) + "\\";}
if (lfm_folder=="") {folder = fbfolder + "\\" + p.clean_filename(p.artist) + "\\";}
if (lfm_folder.indexOf(":\\") > 0) {folder = lfm_folder + "\\" + p.clean_filename(p.artist) + "\\";}
}catch (err) {{fb.trace("Biography Photos: " + "TypeError: 'folder path' undefined");} var folder;}
if (!p.fso.FolderExists(folder)) return;
{
        if (p.artist == "" || p.artist == "?") return;
        
		this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		this.xmlhttp.open("GET", "http://www.last.fm/music/" + encodeURIComponent(p.artist) + "/+images", true);
		this.xmlhttp.send();
		this.xmlhttp.onreadystatechange = function() {
			if (this.xmlhttp.readyState == 4) {
				if (this.xmlhttp.status == 200) {
					var text = this.xmlhttp.responsetext;
                    
                    try {
                    
					if (!im.doc) im.doc = new ActiveXObject("htmlfile");
					im.doc.open();
					var div = im.doc.createElement("div");
					div.innerHTML = text;
					var data = div.getElementsByTagName("img");
					var urls = [];
					for (i = 1; i < data.length; i++) {
						if (data[i].src.indexOf("http://img2-ak.lst.fm/i/u/avatar170s/") == 0) urls.push(data[i].src.replace("avatar170s", size == "low" ? "300x300" : size == "medium" ? "500x500" : size == "high" ? "_" : "_"));
					}
                    
					for (i = 0; i < Math.min(urls.length, im.limit, 50); i++) {
					p.WshShell.Run("cscript //nologo \"" + p.script_path + "bio_photos.vbs\" \"" + urls[i] + "\" \"" + [folder + p.clean_filename(p.artist) + "_" + i] + urls[i].substring(urls[i].lastIndexOf("/")+1000) + ".jpg" + "\"",0,false);
                    }
                    
                    //Update Images--------------------------------------------
                    var cicleTimerStarted2 = false;
                    var cicleTimer2 = null;
                    
                    //Start Timer 2 (Func)
                    (function startTimer2(){
                    if(!cicleTimerStarted2){
                    cicleTimer2 = window.SetInterval(function() {on_timer();}, "500");
                    cicleTimerStarted2 = true;
                    }})();
                    
                    //Stop Timer 2 (Func)
                    function stopTimer2(){
                    if(!cicleTimerStarted2) return;
                    window.ClearInterval(cicleTimer2);
                    cicleTimer2 = undefined;
                    cicleTimerStarted2 = false;
                    }
                    
                    //Definitions
                    var pos = 0;
                    if(urls.length<im.limit) {var num = urls.length;}
                    else
                    if(urls.length>im.limit) {var num = im.limit;}
                    
                    //*On Timer*
                    function on_timer(id) {
                    if(cicleTimer2 && id == cicleTimer2.ID){

                    //Check Files on Timer
                    var list = utils.Glob(folder + "\\*.jpg").toArray();
                    var a = [];
                    //fb.trace("files: " + list);
                    for (i = 0; i < list.length; i++) {
                    if (list[i]) a.push(list[i]);   
                    }
                    
                    //Length
                    l = list.length;
                    
                    //Update On First Down.(Keep Position)
                    if(im.images.length==0 && l>0) {
                    im.update();
                    pos = list.toString();
                    if(pos.indexOf("_0")>0) {pos=0;}
                    else
                    if(pos.indexOf("_1")>0) {pos=1;}
                    else
                    if(pos.indexOf("_2")>0) {pos=2;}
                    else
                    if(pos.indexOf("_3")>0) {pos=3;}
                    else
                    if(pos.indexOf("_4")>0) {pos=4;}
                    else
                    if(pos.indexOf("_5")>0) {pos=5;}
                    }
                    
                    //Stop Main Timer
                    stopTimer();
                    
                    //Wait Untill All Images Are Down.
                    if(l<num) {return true;}
                    
                    //Update All Images
                    im.update();
                    window.NotifyOthers("images", "update");
                    
                    //Keep Image Position
                    im.index=pos;
                    
                    //Stop Timer 2 
                    stopTimer2();
                    
                    //Start Main Timer
                    startTimer();
                    return false;
                    }}
                    //End Of Update--------------------------------------------

                    im.doc.close();
                    } catch (err) {im.doc.close();}

				    } else {
					p.console("HTTP error: " + this.xmlhttp.status);
}}}}}

Correct. All the changes are to files inside the js_marc2003\js folder.

LibraryTotalTracks = fb.GetLibraryItems().count;

..but in testing, I've determined that fb.GetLibraryItems() gets handles for the tracks in the playlists rather than the Album List as I had led myself to believe. (I thought Library != Playlists. Oops!)

I suggest you go away and test again. For you to think fb.GetLibraryItems has anything to do with playlist contents is quite insulting.

Remember that you need to use the on_library_items_added and on_library_items_removed callbacks if you want to track changes while foobar is running.

No album art yet but I have posted some other updates.

Quote

Thumbs: Download limits have been increased and the default has been reset to 10. Also, automatic downloads are now an option but turned off by default. Simply use the right click menu to enable.

Automatic downloads only trigger when the following conditions are true:

• a new track begins and the artist is different from the previous track
• there are no existing images. Use the Download now option if you want to check for more.
• the last automatic check was more than an hour ago. Timestamps are maintained by the script to prevent unnecessary requests if there were no images found previously.

Musicbrainz: Now attempts to retry up to 5 times on failure.

https://github.com/19379/js-marc2003/releases

Also, I just want to make one thing very clear.... there is no support if automatic downloads don't work for you. Simply use another script/software/fix it yourself/whatever. 

It should work with dynamic stream changes but I haven't tested that. It would be good to get some confirmation on that.

my artist arts don't get downloaded at all, I even emptied the wsh_data folder, the bio got downloaded, but not the arts
is there any way to troubleshoot this ? I'm new to this foobar thing

.vbs=VBSFile

Why not use the edge style options built in to the channel spectrum component?