Fix the export crash issue on iPad

1. 실시간 미리보기가 추가되었습니다. 2. 기타 알려진 문제를 수정했습니다.

휴대전화 무음 스위치가 켜져 있을 때 재생이 불가능한 문제

알려진 문제 해결

모든 오디오 트랙 내보내기.

알려진 문제 해결

1. 국제 언어 지원 추가. 2. 기타 알려진 문제 해결.

1.국제화 지원 추가 2.기타 알려진 문제 해결

1. Fix known issues;

1. Known problems solved.

1. Provide lifetime discounts; 2. Known issues resolved.

1. Added separate piano parts; 2. Optimized functional interface; 3. Fixed other known issues;

1. Non-subscribers export trial listening; 2. Fix known issues;

1. new mute, solo and General settings options for the mixer; 2. new guitar part for instrument separation; 3. UI optimization, known problems solved;

1. New lifetime version purchase; 2. Other known issues fixed;

1. Optimize the speed of accompaniment processing; 2. Other known bugs handling;

1. Interface optimization; 2. Solve some known problems;

1. Fix the flashback problem of importing videos under iOS14; 2. Solve some other known problems;

1. UI optimization; 2. Known bugs fixed;

1. Optimize the speed of accompaniment generation; 2. Other bug fixes ;

1. Adapt the UI to iPad; 2. Add iPad import file guide; 2. Fix known bugs;