You kan drag the most objects.
It is for example able to:
drag jingle to trashcan to delete it.
or
drag a sampling from desktop file window to
the posistion you will have it.
It is many combinations, the best way is to
test whats able or not.
To drag a object press left mouse key
and wait for Flat hand mouse form
Then drag the object to the place you will have it
and release the left mouse key.
If the recieving window don't like the object
a alert box will inform you abaut it
or nothing happens.