Do LemonWire and WinMX Music use the same ports? Make sure they don't.

Optional: I don't have the most recent WinMX Music installer but used the following one & it then said there was an update and it updated itself from memory. There's nothing in my Downloads folder. WinMX Music free, but note this is the old version. After installing it will ask if you wish to update & an installer will temporarily download. I don't know if your AV will panic with it though.

Just be careful of the installation steps, so watch it carefully. There's many 3rd party installation options (between 6 to 8 of them.) I clicked Decline to all of them.