I have no idea what's happening there. Perhaps someone has repackaged/reworked the LPE version. After all it is 'open-source'. Seems WinMX free is maybe put together by different persons. If I can find a copy I might add it to the Clone connection installer.
Specifically the WinMX Music version I've tested 4.9.8 is a LW 4 clone. Snapshots show the startup screen & then the main interface with the About window sitting in the middle. There's no reference to OrangeWire. Also I've been connected to other WinMX Music versions previoiusly.
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As an off-topic, I haven't been using the network much for many months so will probably update the connection lists for all the gnutella clients late December. Recent tests showed the connection lists still work.