Allow deleting without taking your hand off the mouse

To streamline the process of deleting silent/audible segments, it'd be nice to be able to keep your hand on the mouse.

One way would be to bind a mouse button to the Delete action (or whatever action), and for multi-button mice this could work well.

Another idea could be a mode where the selection follows the mouse cursor, so you'd be selecting segments by merely moving the mouse over them and you could keep one hand on the mouse and another over the Delete key.