I'm uploading some audio to soundcloud, but would like to add the audio to a specific playlist i have also created, without making an extra request (see "Adding Sounds to a Set" http://developers.soundcloud.com/docs/api/guide#uploading). Is it possible to upload directly to a playlist?

Alternatively, I could send an extra request to add the track to the playlist but how would you do this in AS3. I see examples for JavaScript but am unsure how this would work in Flash.