My first attempt at a video playing script...help please!

Hi. I am trying to write a media player that satisfies the following:
1) Accepts a notecard with URLs to movie files on each line
2) Plays the first movie right after the card is given
3) Has a dialog with basic video controls

The code I posted below seems to execute differently each time I run it but aside from that I have a few questions and issues...

1) The first URL in a sample notecard (below) doesn't play. I have llSay calls at the top of cycle_playlist and no number and a blank string are printed for the first URL in the playlist. However when the timer event goes off the length of the list is 3. The other items in the playlist cycle correctly....samepl notecard used...
http://www.perp.com.nyud.net:8090/whale/av/whale-hi.mov
http://www.esm.psu.edu/Faculty/Gray/graphics/movies/Think-Different.mov
http://www.perp.com.nyud.net:8090/whale/av/whale-hi.mov
2) I need help using timers to cycle through the playlist (a list with URLs read from the notecard)...also...must each movie's length be defined beforehand? Is there meta-data I can get from the movie prior to playing it?

Anyway, I appreciate any help or tips and I hope this makes some sense!

Thanks,
newbie Epilort

float START_TIME = 1.0;
float RUN_LENGTH = 20.0;
key VID_TEXTURE;
integer CURRENT_VID_INDEX = -1;
integer CHANNEL = 1;
list MENU_OPTS = ["Next movie", "Stop Playing"];
list nc_urls = [];
string nc_name;
key nc_queryid;
integer nc_line;
integer nc_total_urls;
integer DS_READY = FALSE;

cycle_playlist()
{
    ++CURRENT_VID_INDEX;
    
    llSay(0, (string) CURRENT_VID_INDEX);
    llSay(0, "Now playing: " + llList2String(nc_urls, CURRENT_VID_INDEX));
    
    llSetTexture("Blue Plasma", ALL_SIDES);
    llParcelMediaCommandList ( [
          PARCEL_MEDIA_COMMAND_URL, llList2String(nc_urls, CURRENT_VID_INDEX),
          PARCEL_MEDIA_COMMAND_AGENT, llDetectedKey(0),
          PARCEL_MEDIA_COMMAND_TIME, START_TIME,
          PARCEL_MEDIA_COMMAND_TEXTURE, VID_TEXTURE,
          PARCEL_MEDIA_COMMAND_PLAY ] );
    llSetTimerEvent(RUN_LENGTH);
}

default
{
    
    on_rez(integer number)
    {
        llResetScript();
    }
    
    state_entry()
    {
        llListen(CHANNEL, "", NULL_KEY, "");
        VID_TEXTURE = llGetInventoryKey("Blue Plasma");
    }
    
    touch_start(integer number)
    {
        llDialog(llDetectedKey(0), "Select an option...", MENU_OPTS, CHANNEL);
    }
        
    listen(integer channel, string name, key id, string message)
    {
        if (llListFindList(MENU_OPTS, [message]) != -1)
        {
            if (message == "Next Movie")
                cycle_playlist();
            if (message == "Stop Playing")
            {
                llParcelMediaCommandList( [ PARCEL_MEDIA_COMMAND_UNLOAD,
                                            PARCEL_MEDIA_COMMAND_URL, "" ] );
                llSetTexture("ll_buildside_billboard", ALL_SIDES);
                llSetTimerEvent(0.0);
            }
        }
        else
            llSay(0, "Invalid option.");
    }
                

    changed(integer change)
    {
        if (change & CHANGED_INVENTORY)
        {   
            CURRENT_VID_INDEX = -1;
            nc_name = llGetInventoryName(INVENTORY_NOTECARD, 0);
            nc_urls = [];
            nc_line = 0;
            nc_queryid = llGetNotecardLine(nc_name, nc_line);
            if (DS_READY)
                cycle_playlist();
            
        }
        
    }
    
    dataserver(key query_id, string data)
    {
        if (query_id == nc_queryid)
        {
            if (data != EOF)
            {
                nc_urls += data;
                ++nc_line;
                nc_queryid = llGetNotecardLine(nc_name, nc_line);
            }
            else
                DS_READY = TRUE;
        }
    }
    
    
    timer()
    {
        llSay(0, (string) llGetListLength(nc_urls));
        if ((CURRENT_VID_INDEX + 1) == llGetListLength(nc_urls))
        {
            llParcelMediaCommandList( [ PARCEL_MEDIA_COMMAND_UNLOAD,
                                        PARCEL_MEDIA_COMMAND_URL, "" ] );
            llSetTexture("ll_buildside_billboard", ALL_SIDES);
            llSetTimerEvent(0.0);
        }
        else
            cycle_playlist();
    }
}

I'm afraid you cannot get any meta data concerning the movie length via an LSL call.
The only way to do it is to add it as extra information in the notecard.

Did spot a spelling mistake, Next movie instead of Next Movie.

Also way the code is written if you reset the script you will then have to change the notecard to get it to reread it.