Feature request: Play next option for file from library

[LukeOwlclaw]

When searching a song in the library, currently one can only append the song to the current playlist.

An option would be nice to add the song to the current playlist right after the current song (so it plays next).

Other options that might come in handy:

• add song to current playlist and play now
• add song to new playlist and play now
• add song to playlist... -> show list of playlists