Mary Ann,

You don't have to buy anything to use the audiosync function of Eclipse.  (Hurray!!)  Here's how it works:

When an Eclipse reporter takes a job, they have the ability through their writers or laptop (I'm not sure which) to record the audio of that job.  That makes what's called a wav. file.  The reporter can send the wav. file to the scopist either by transferring it to a CD or using an Internet service like T3 or Streamload or SendThisFile.
Some of those services are free, but the one which works best for me is T3 for which there is a monthly charge that my reporters pay. 

When you get the wav file, if it's named exactly the same as the ecl file, it will "synch" up.  Then, you can hit Alt J in your Eclipse keys to start the audio and Alt H to stop it no matter where you want to check in the file.

To get back to actually installing the wav file on your own computer, it's done through Windows Explorer.  Say you got the wav file on a CD.  Then you'd just install the CD, got to Windows Explore, and copy and paste the wav file from your CD drive into that particular Eclipse user file for that reporter.

If the reporter sends it to you via the Internet (one of those services I described above), you'd download the wav file directly to your Eclipse user.

This may sound more confusing than it is, but it's really not.

Can I make a suggestion to you?  You would get tons of responses to all your questions at either the Scopists Support Group at yahoo.com or the CRForum on CompuServe.  Both are free.  This scopists.com, although it has a great web name, is not active at all.  If you need the websites, I'll post them here.  I think on the Main Page of this scopists.com there's a direct link to the CRForum and you can get there from here.

Good luck!
Karen