Mp3 player that lets you go back 5 seconds with the left arrow
As always VLC will do that for you. The key combination:

⌘ +^ + →

from within VLC will skip forward 5 seconds. Left arrow for backwards.

You can also change the key combination, as well as skip, 10 or more seconds depending on the combination you choose from the menu, VLC&gt;Prefernces&gt;Hotkeys: