closed sessions after stopping them, to prevent a windows bug where the first song played would be used in every subsequent call to MediaPlayer.Play() regardless of which song was actually requested.
Update .gitignore

Added the MonoGame.Framework.Content.Pipeline projects to be ignored.
Merge pull request #2342 from uvTwitch/develop

Fixed a MediaPlayer.Play() bug on windows
Merge branch 'develop' of https://github.com/mono/MonoGame into develop