"The GadgetApps Playlist Manager will allow you to create, edit the contents of, delete and rename Windows Media Player 10 & 11 format playlists (ASX files) directly on your Pocket PC or Smartphone. All you need is a device that has at least version 1.0 of the Compact Framework which virtually all Windows Mobile devices have. The best bit? GA PlayList Manager is FREEWARE, yours to install and use on as many devices as you choose.
This program looks pretty cool. If you are interested in editing your playlist from your Windows Mobile Smartphone then you can download this freeware application from Gadget Apps website.