You can create and share a cassette with friends or anyone publicly (via a link you can share on twitter, facebook, email, etc) so they can listen to your recordings, add new recordings (with the appropriate right) and more!
You can also share individual recordings for anyone to listen to, in the same way.
All recordings are stored into your account, and linked to your account. Phone lost? Switching to a new mobile phone? Just login again and access all your recordings.