I just built a little tool that might be helpful for beginners - but it can also save time for advanced developers deploying their apps on Android.
"Keymaker" does what its name says: It creates a valid keystore file you need to sign your LiveCode-app with if you want to distribute it through Google PlayStore.
You enter all the data - most important the App Alias Name and the Password (will be used both for keystore and private) and the personal data. The tool will save your personal data so it appears automatically next time you use it. All you need to fill in then is alias name and password. After klick on "Generate keystore file" you can save the file wherever you like and use it to sign your LiveCode app with.
No more searching for the complex keytool-command, entering it in the console, going through the prompts and so on. This can save time and pain each time you create an Android app.

Of course it is required to have JDK and Android SDK installed beforehand.
It's still kind of beta but it works for me.
http://www.fehr-media.de/downloads/Keymaker_Windows.zip
http://www.fehr-media.de/downloads/Keymaker_Mac.zip
Try it out if you like - any feedback welcome!
Regards
Kroka