So I have an iPhone 4s that was previously synced to my friend's computer because mine was broken. I recently got a new one and so I couldn't add new music from my iTunes obviously. I went to sync music (to my iTunes), which would delete my current iPhone music obviously, so I did this. However now that it is synced up, and when I add music, I can't edit it from my iPhone or create new playlists from my iPhone. How do I get it so I can pick and choose songs to delete from my iPhone music library instead of choosing the iPhone sync music menu
this is what it looks like before I add any music but synced it up

this is what it looks like when I sync it up and add music. at this point I can't delete songs individually from the iphone library, but rather have to do it from this screen instead which is what i don't want

please halp