There is a missling link between Muse Direct OSC or Mind Monitor OSC and LabstreamingLayer. Giso Grimm has a tool which convert OSC messages into an LSL stream:
https://github.com/gisogrimm/osc2lsl
An example which connects the Muse Direct app or the Mind Monitor app OCS stream over LSL to for instance Arnaud Delorme s Neurofeedbacklab would be helpful, and would make it easier to use those for research: