This is the 3064th most frequent Chinese word.
辑
Collection; compilation; to edit; to coordinate.
Here, '辑' is used to mean a 'series' or 'collection' of programs in a sequence.
做一个好的节目辑需要很多规划。
Creating a good program compilation requires careful planning.
In this sentence, '辑' refers to a 'compilation' or 'collection' of music.
这是一本新的音乐辑。
This is a new music compilation.
The word '辑' in this context refers to a 'special compilation' or 'file' compiled for case investigation.