Soundpad Update v2.5.2

The changes include:

• Added audio ducking option to reduce the volume of other applications when playing sounds.
• Added fade-in and fade-out effects to the sound editor. If you set the cursor at a position without selecting any section, then fade-in will work from beginning to the cursor and fade-out from cursor to end.
• Fixed dynamic volume normalization for sounds shorter than 0.4 seconds.
• Fixed negative Karaoke values to not stop the playback line prematurely.