Populate Credits, Musicians from CSV file

Because I haven't asked for enough... ;)

Another nice feature would be a way to populate the Credits and Musicians tabs from a CSV (Comma Separated Values) file, such as can be produced by a spreadsheet.

The "easiest" interface I can see would be a button or menu item available from each of these tabs that permits the user to select a file. The file would need to have two or three columns corresponding to Person, Role, and [optionally] Tracks. It would be the user's responsibility to make sure the file was organized properly and the data was valid for each column, although if the data for the optional column 3 wasn't in the general form (\d+)(,\d+)* or if the tracks indicated don't exist, an error message or warning would be a nice touch.