GoldWave updated to v5.50

GoldWave has been updated to v5.50.

Changes in v5.50 include:

• Unicode interface.
• Integrated GWVoice effects.
• Faster processing for some effects using SSE and multiple processors.
• Cleaner polyphase resampling.
• Higher resolution frequency visuals.
• Updated FLAC and Vorbis codecs.
• Many fixes and improvements.