You can use this app for winmo
You can use remote amp (this app is originally for itunes and winamp)
But since mediamonkey and winamp use almost same plugins.. works for monkey..
Just follow following steps..
step1: Install the app on your ppc and desktop
step2: Now goto your mediamonkey program directory(C:\ Program files\mediamonkey).. and copy the mediamonkey.exe on desktop
step3: Rename it as winamp.exe and copy it back to mediamonkey directory.
step4: Now start the remoteamp app on your and desktop
step5: Select winamp and make sure to change the path to mediamonkey directory(C:\ Program files\mediamonkey).
step6: Now start the app on your winmo and enter your server IP.
Use the remote....!!!
Enjoy