how to read playlist with wmp in labview

[Serdj]

I have implemented the WMP apllication into labview with the ActiveX object and also loaded my desired playlist (which I earlier saved with the WMP under C:\Songs\myplaylist.wpl) through writing a constant string into the URL. So far so god. I want now to load all the songnames from this play list into my labview program. The best would be to use a WMP-Methode which delivers me a 1D Stringarray with all the songs which are in this playlist. I experimented with the Classes "Current Media" and "Current Playlist" but unfortenately, I was not able to get all the songs of this play list at once.

Can somebody help me out?

[MikeS81]

Hi Serdj,

see the attached example.

Mike

Message Edited by MikeS81 on 06-23-2009 09:38 AM

[Serdj]

Thanx for your help Mike - it did solve my problem.

Now i have a new problem: When I load a playlist and use Mikes little program to read the songnames, I get the title names of all the songs, which is also what I want. As soon as this is done I start continously reading the following informations during WMP is playing - actual time, duration and name of the song.The problem is with the name-string and the duration-valure. If the WMP is in stop mode, I get the filename for the name-string and a 0 for duration. As soon as the player is playing the song, the name-string switches automaticly to the title and i get the correct duration time. I want always to get the title name and the correct duration, even when the WMP is in stop mode. Is this somehow possible?

This is how i read the songinformations:

[MikeS81]

Hi Serdj,

i think in "StopMode" the currentItem Refnum is empty, so you can't read anything from it.

How do you change between RUN and STOP?

Can you post your vi? 

Mike

[Serdj]

Hello Mike. I made a simple WMP LabVIEW program which is attached to this thread. As soon as i load a mp3-song (with the load-button) I get the file-name as the song-name and a 0 for duration. After I press play (on the WMP play button) this 2 informatins change. The songname is suddenly the title and the duration has a correct value. I can use some mp3-editing tool like mp3tag to change the title of a mp3 song, so that the filename and the title have same names. But it is not a nice solution. And there is still the problem with the duration value which is 0 in the begining.

I realized that your liddle program (attached in your first reply) gets the title-names and not the filenames, while going through that loop. I could use the "item" method of the "IWMPPLaylist Class" like you did in your for-loop. In order to do that, I need to know exactly which songnumber of a songlist is beeing played, as the "count" value for that method. How can I get that information? This would solve at least the "filename - titlename" problem. But I still dont know what to do with the duration problem?!?

[Serdj]

Is it possible to have the WMP playlist in LabVIEW like it is at the WMP usually. Where you double-click the song you want to be played? That would be awsome!

[MikeS81]

Hi Serdj,

yes i think it's possible. You can use an Event Structure to get the double click event and react on it.

Mike

[Serdj]

Mike, if you tell me how, I will go to my church and ask for a blessing of Mike´s soul !!!

[MikeS81]

Hi Serdj,

see the attached example.

Mike

[Serdj]

Mike thanks a LOT!

I am now able to get the songnumber which has to be played using your double-klick method (i didnt know about it earlier since I am a beginner). Now that I have the number as an I32, how do I tell WMP to play that song number? Which method is this? I am trying all different thing all day, but cant find a solution. I just want to tell WMP to play a certain songnumber (playlist has been uploaded at the beginning through the class "currentPlaylist->URL ").