Share your experience!
One single thread its more than enough, before creating new threads use the search bar and look for other threads on the same topic, such as this
http://talk.sonymobile.com/t5/Xperia-Z1/Playlist-in-Walkman-app/m-p/383329/highlight/true#M342
Yes, they can't be. You may try creating playlists inside walkman app itself if you prefer to add songs to them later.
Hi, i am also facing same issue. Cant edit or add any songs to the plalist which created throught "Music Go" application and moved to device. Dear sony this is a serious bug. (I hate creating and addding songs through device & i rather prefer PC for this)