To edit a playlist:

1. Check-in to any venue
2. Tap "My Music"
3. Tap "Playlists"
4. Tap on the name of the playlist you wish to modify
5. Tap "Edit"

To delete a playlist:
6. Tap "Delete Playlist"
7. Tap "Delete Playlist" again to confirm deletion request

Please note: Only playlists created within the TouchTunes app can be modified or deleted.