You may log into Stitcher without first logging into Facebook. Once you’ve opened Stitcher on your device, underneath the "Sign in with Facebook" area is in small print "Log In" and "Sign up with Email." If you tap "Log In" you should be taken to a Login page that will once again give you the opportunity to log in in via Facebook or "Stitcher account login" under that. In the Email and Password boxes, enter your Stitcher account credentials and nothing tied to your Facebook account will have been accessed. If you do not yet have a Stitcher account, opt for "Sign up with Email" to create an account.
On Android, you may also sign in with Google.
For password help, please click the following link:http://www.stitcher.com/forgot-passwordand follow the instructions with the email address you previously registered with Stitcher.