I think the answer is again http://lmms.io/forum/viewtopic.php?f=15&t=31326
No LMMS cant access the net -but.....
Suppose we had a midi-HW-keyboard, that did have a net-connection, then connecting that KB to lmms and have midi-signals from the net pass through .....
But this is pure guesswork
The prizetag for HW for that experiment would be pretty hefty as well..