Hi ToneSlave,
jammr records jam sessions and makes them available from listening and download. This happens “in the cloud” so nothing gets saved on your computer unless you decide to download the jam. Here is how it works:
After two or more people jam together, the jammr servers send each user an email with links to listen or download the jam.
If you are alone then jammr will not record the jam.
Premium users (or during beta, all users) can even download individual tracks for remixing. Everyone can listen to or download the full mix.
I posted about recorded jams on the blog:
http://blog.jammr.net/2013/08/04/announcing-recorded-jams/