F5 > Play the bit before the selection.
F6 > Play the the selection.
F8 > Play the bit after the selection.
1 > Move start of selection left.
2 > Move start of selection right.
3 > Move end of selection left.
4 > Move end of selection right.
5 > Move whole selection left.
6 > Move whole selection right.
Ctrl + E > Save selection.