Option to add/replace tracks from playlists in dpsop

[junkmechanic]

Hi. I have prepared this small patch to include this functionality over the current commit (master 3890ab3f83fea51e8ecd23922dbae228f594c672)

diff --git a/dspop/dspop b/dspop/dspop
index 3de87ac..45545b2 100755
--- a/dspop/dspop
+++ b/dspop/dspop
@@ -273,18 +273,30 @@ def menu_playlist(sc, idx):
     current_track = sc.status()
     items.extend(format_tracks(tracks, current_track))

+    while True:
+        choice = dmenu(items)
+        if choice is None:
+            return False
+        elif choice == 0:
+            sc.play(idx)
+            return False
+        elif choice == 1:
+            sc.add(idx)
+            return False
+        else:
+            menu_track(sc, idx, choice - 1)
+            # sc.play(idx, choice-1)
+            # return True
+
+def menu_track(sc, idx, track):
+    items = ["[ Add to queue ]", "[ Replace queue ]"]
     choice = dmenu(items)
     if choice is None:
-        return False
+        return
     elif choice == 0:
-        sc.play(idx)
-        return False
+        sc.add(idx, track)
     elif choice == 1:
-        sc.add(idx)
-        return False
-    else:
-        sc.play(idx, choice-1)
-        return True
+        sc.play(idx, track)

 def menu_offline(sc):
     while True:

I hope this is desirable to others as well.

The other way is to make this a setting for the user to choose between always adding or replacing a track (that way the extra prompt wouldnt show up).
This can be an option that the user can specify in (and hence this would open the door to provisioning) a config file. I can create a pull request if you want to delve into something like that.