mp3 files and the player object

[Klaus Major]

Hi Chris,

> I want to use the player object to play several mp3
> files in a row.  I am successful at changing the
> FileName property and playing my files, but the trick
> is that I need to wait until each sound is finished
> playing before playing the next one.  Is there any way
> to do this?  Such as a 'wait until player "myPlayer"
> is done' type of command?  Please help.
>
> Thanks,
>
> Chris Sheffield
> Read Naturally

here is another smart ;-) approach to your problem.

I will use the "send xxx in yyy" command.

My example requires a field "mp3list", where the filenames
of the mp3 files are stored. Could of course be a variable or
custom-property, too.

###############

global songmessage
## the name does not matter, call it walter if you like :-)

## here we will store the id of the message that we will send
## when the current mp3 is finished. So we can cancel that
## message from being delivered when we close this card of stack.
## See "pendingmessages" in the docs...

on mouseup
## can of course be "on opencard" or whenever you want to start the 
songs...
   set the filename of player "xyz" to line 1 of fld "mp3list"
   start player "xyz"
   send "nextsong" to me in (the duration of player "xyz"/the timescale 
of player "xyz") secs
   ## This means that this message will be send exactly when the current 
song has finished...

   ## Every sound- or video-file can (and will ;-) have a duration. 
Surprise, surprise... ;-)
   ## Unfortunately this duration is measured in the files own 
timescale...
   ## Means how much timeunits per second that file will be measured in..
   ## But both properties can be queried :-)

   put the result into songmessage
   ## Each command that will be "send..." will be managed by the engine
   ## in the "pendingmessages" and gets its own id.
   ## Now we store this id in this global var "sonmessage", so we can 
cancel
   ## it when leaving this card or closing this stack
   ## You can take another name for that var, of course...
end mouseup

on nextsong
   put lineoffset(the filename of player "xyz", fld "mp3list") into 
whatline
   ##what is the current song...

   if whatline < the num of lines of fld "mp3list" then
       ## only if it is not the last song in this list...

       set the filename of player "xyz" to empty
       set the filename of player "xyz" to line (whatline + 1) of fld 
"mp3list"
       start player "xyz"
       ## next one...

      send "nextsong" to me in (the duration of player "xyz"/the 
timescale of player "xyz") secs
      put the result into songmessage
   end if
end nextsong

################# Does even fit in the StarterKit limit :-)

Then you could write this in the cardscript:

on closecard
   global songmessage
   if "songmessage" is in the pendingmessages then
   ## Maybe much time has already passed and all songs have been 
played...
   ## Omit this "if...then..." caluse if you LOVE error-dialogs ;-)
       cancel songmessage
   end if
...
end closecard


Hope this helps.


Regards

Klaus Major
k_major at os.surf2000.de