You only need to delete and recreate the account if you want to change the username, it seems you are just wanting to change the stream title?
If SHOUTcast v2 you must edit your YP Hash
If SHOUTcast v1 you must goto settings > auto dj > encoder and you will see the stream title
If Icecast goto settings > stream title is on the first tab
Remember to restart with each change
note -- with SHOUTcast v1 and v2 there are two places that are for stream title, not sure why but it causes confusion and should be corrected