#2 Runtime error when user starts playing

[Toni Mattis]

If the cursor is at the end of the ATSC-Code, if
there's only one character selected or if there's one
character in the whole ATSC-Code, the program creates a
zero division error.

Please don't play any sequences with less than two
tones and place the cursor at the beginning of the
ATSC-Code. This is the only way to avoid the problem.

This problem will be solved in the next release
(probably Beta 2)