Convert the add-on to audio-only.

Making it play video doesn't seem to work anymore with modern versions of Kodi and converting it to an audio plugin may make it play well with other audio plugins (mainly, the Scrobbler plugin), although this was not tested yet.

addon.py

@@ -41,7 +41,7 @@ def main_menu():
         services not working after Last.fm rolled out their beta and
         everything is broken until it comes back "soon"? """
         for station in ["library", "mix", "recommended"]:
-            li = xbmcgui.ListItem('Last.fm %s %s' % (lastfm_user, station), iconImage='DefaultMusicVideos.png')
+            li = xbmcgui.ListItem('Last.fm %s %s' % (lastfm_user, station), iconImage='DefaultMusicPlaylists.png')
             li.setProperty('IsPlayable', 'true')
             xbmcplugin.addDirectoryItem(handle=addon_handle, url="%s?station=user/%s/%s" % (base_url, lastfm_user, station), listitem=li)
         xbmcplugin.endOfDirectory(addon_handle)
@@ -174,10 +174,10 @@ def get_next_track(station):
         li = xbmcgui.ListItem(" - ".join([artists, next_track["name"]]))
         li.setInfo("music", {'artist': artists, 'title': next_track["name"]})
         li.setProperty('IsPlayable', 'true')
-        playlist = xbmc.PlayList(xbmc.PLAYLIST_VIDEO)
-        playlist.add(url="%s?track=%s&station=%s" % (base_url, next_track["url"].replace("&", "%26"), station_arg), listitem=li, index=playlist.getposition()+1)
+        playlist = xbmc.PlayList(xbmc.PLAYLIST_MUSIC)
+        playlist.add(url="%s?track=%s&station=%s" % (base_url, next_track["url"].replace("&", "%26"), station_arg), listitem=li, index=playlist.size())
 
-    """ Now, here we go with the stuff we were requested: to resolve
+    """ Now, here we go with the stuff we were requested: resolving
     to a playable URL """
 
     """ TODO: for now, we are discarding YouTube links provided by
@@ -190,7 +190,7 @@ def get_next_track(station):
 
     try:
         ydl_opts = {
-            'format': 'best',
+            'format': 'bestaudio',
             'no_color': True
         }
         ydl = YoutubeDL(ydl_opts)
@@ -210,10 +210,24 @@ def get_next_track(station):
     track = get_next_track(args["station"][0])
 
     if track:
+        # We first remove all other items from the playlist so we can do our magic
+        playlist = xbmc.PlayList(xbmc.PLAYLIST_MUSIC)
+        # but we save a reference to our starting list item to add it later
+        current_li = playlist[playlist.getposition()]
+        playlist.clear()
+
         artists = artists_str(track["artists"])
         li = xbmcgui.ListItem(path="%s?track=%s&station=%s" % (base_url, track["url"], args["station"][0]))
         li.setInfo("music", {'artist': artists, 'title': track["name"]})
         li.setProperty('IsPlayable', 'true')
+
+        """We need to add back to the playlist our starting item with a reference to the station
+        (well, it doesn't really matter what the first item is) and also the first song from the
+        station we are going to play now.
+        Without this, it would stop playing after the first song."""
+        playlist.add(url="%s?%s" % (base_url, sys.argv[2][1:]), listitem=current_li, index=0)
+        playlist.add(url="%s?track=%s&station=%s" % (base_url, track["url"], args["station"][0]), listitem=li, index=1)
+
         xbmcplugin.setResolvedUrl(addon_handle, True, li)
 
     else:

addon.xml

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<addon id="plugin.video.lastfm" name="Last.fm" version="1.1.0" provider-name="chuso">
+<addon id="plugin.audio.lastfm" name="Last.fm" version="1.1.1" provider-name="chuso">
     <requires>
         <!-- May work with previous versions, but it was only tested with these -->
-        <import addon="xbmc.python" version="2.20.0"/>
+        <import addon="xbmc.python" version="2.26.0"/>
     </requires>
     <extension point="xbmc.python.pluginsource" library="addon.py">
-        <provides>video</provides>
+        <provides>audio</provides>
     </extension>
     <extension point="xbmc.addon.metadata">
         <summary lang="en">Last.fm radio stations</summary>