Several ways to overcome that...
Drag it to where you want it. Or, while the clip is still in the bin, position the sequence timeline cursor where the music is to begin.
Then right-click the music clip and OVERLAY ON SEQUENCE AT CURSOR.
If this disturbs the video track, lock that track before adding audio 2. Right-click at the left of the track and LOCK TRACK.
If you make mistakes, simple press <ctrl-Z> to go back - step-by-step.