Just go and left click your avast! blue ball icon in system tray, next to your system clock. Find P2P shield icon on the left side of that window and click it once. Now, on the right side click on START to start that provider (of course if it’s not running already)…

Now, go to CUSTOMIZE and put checkmark on program that you wanna use as your P2P client… in your case, it’s WinMX. Click OK and all is set… Next time when you run WinMX, you’ll be fully protected by avast!

Hope this helps… if not, just ask my friend… it will be my pleasure to help you.

Cheers !