1261 Add track to playlist silently adds to library [#5730]

[chrisjj]

I put all Now Playing tracks in a new playlist temporarily, i.e. afterwards deleted the playlist. I later found this causes a net addition to the library of one of those tracks - unbeknownst to me it had not been in the library previously. (In fact, I'd mistaken it for libraried - it was a non-libraried copy of a libraried track, with same tags.)

I want tracks not to get secretly added to the library. I think such an operation ought to warn.

Edit: Reported on 1250, reproduced on 1261.

[rusty]

Thanks. Tracked at:
http://www.ventismedia.com/mantis/view.php?id=5730

-Rusty