Voicethread

I experimented with voicethread.com, producing a very brief sample for my students. I thought I would have the opportunity to edit it after embedding it in my blog, but it doesn't seem to be allowing me the chance to do that. I had planned, for example, to use the markers to indicate which of the grandkids I was talking about at different points during my narrative.
I also struggled to get the voicethread onto my blog. I learned that the voicethread apparently has to be made public before embedding it. Any advice there would also be appreciated!
Another sample voicethread was posted recently. Both of the voicethreads are lower on this blog. You have to click the "I'll do it later" button to get rid of the box over each voicethread when you want to listen to it.