If you like to rename any playlist via Ziepod, follow the steps given below:
- In the 'Subscriptions' tab, make a right click on the playlist you want to rename
- From popped up menu, select 'Properties' menu option, which opens up a dialog window
- Inside the 'Properties dialog', you can edit the name of that selected playlist
- Click 'Apply' button to apply your changes; otherwise click 'Cancel' button
Keep in mind that since by default Ziepod does not update your iPod but iTunes, you will not be able to see this change till you update your iPod manually.
If you don't like to update manually each time, you can set Ziepod to automatically update your iPod after any action you perform, such editing name of a playlist as in this case.