Closing or Opening a Play List. A Bug?

[jdavia]

I have several Play Lists in Hoster.
There is no close in File on the menu bar for a play list.
Exit will close the program, but the list is still open when you reopen the program
You can only use New, Open, Save and SaveAs.

PROBLEM:
If you had a list named def014.hst opened,and wanted another list. You would have to click New to close it and then click Open to open another list.
But clicking New makes a new list named def014-new.hst of the same file half the time
Is this a bug?