beta2 - Some bug fixed!

We have released LovelyComposer 1.1.0beta2, which fixes the bug reported!

• When previewing a chord, the song cannot be played.
• If you select a page longer than the copy source song and paste it, song can't be play.
• The export folder contains .wav

And additonal function

• the range has expanded downward by 4 semitones, making a total of 7 octaves!