MP1-4258: Catch FileNotfoundExceptio if CUE File has been moved and log an error message
MP1-4258: Refactoring of code to support both gapless playback as well as a change of the sample rate for the next song.
Updated Austria.UPC Tirol DVBC Frequencies. (thanks BugsBunny)
MP1-4258: Catch AccessVialotions while getting data from Mixer stream
MP1-4258: Introducing a Mutex to wait on the Syncproc to finish, before  setting up a new mixer instance
MP1-4258: Set the AUTOFREE Flag, so that a stream is automatically freed by the mixer, when it ends. This avoids occasional freezes
MP1-4258: Check sample rate and frequency of next song and invoke playback of song in a new thread if needed, to avoid crashes
Merge remote-tracking branch 'remotes/upstream/master' into 1.5.0Fork
Merge remote-tracking branch 'remotes/upstream/MP1-4258-BUG-BASS_should_raise_g_player_events' into 1.5.0Fork

Conflicts:
	mediaportal/Core/MusicPlayer/BASS/BassAudioEngine.cs
	mediaportal/Core/MusicPlayer/BASS/MixerStream.cs