Here are all important links:
http://lmms.io/forum/viewtopic.php?f=1&t=4740
-A few rules and useful forum instructions
If you like to introduce yourself, to the community, go here:
http://lmms.io/forum/viewtopic.php?f=4&t=4480
To USE -Yep!
LMMS is GPL2
https://docs.lmms.io/user-manual/8-legal/8.1-license