It would be nice if there were one simple list you could copy. But that is not how it works.
You can find your scheme in the registry, but it will take some work.
Or use Sounds and mark down the name of each event sound and the sound you have assigned. Have your friend enter manually. Your friend will have to put each of the event sounds in the correct location to match yours. (needs to be the same path)
HKEY_CURRENT_USER\AppEvents\Schemes\Apps
You will see many subkeys. It's a long list.
Default
Conf
Explorer
Etc ETc
Click the plus sign in front of each of these subkeys, one at a time and look in the left pane for the name of your scheme. Click on the name of your scheme and look in the right pane for the path to the sound file.
How good are you in the registry?
You could export each of these and then combine them into one big registry file. The person recieving this file could double click on the reg file to enter into the registry.
Or better yet, export the entire Apps key and then proceed to remove everything but the REGEDIT4 Heading and the pertinent keys. That would be some task. I wouldn't recommend it if you don't know what you're doing.
Remember, the other person will have to place these sound events in the same path as they are listed in this registry file.
After you have finished with that, go to the next Key:
HKEY_CURRENT_USER\AppEvents\Schemes\Namesand click the +
Add A New Key and name it Your Scheme0
If your scheme is named Classical
Classical0 would be this key's name
Look in the right pane for the dafault value. Modify it to
Classical
or whatever the actual name of the scheme is.