"play" paused wav file with same name string should continue playback

[ilteen]

If a "play" command is received with the same filename as the file that is currently paused, playback should continue and not start over.

[TobiasRoeddiger]

• play: spielt file ab, wenn neue file dann ab beginn, wenn bereits begonnen dann weiter abspielen
• pause: pausiert aktuelle file / jingle / freq
• play empty: go to idle state

[TobiasRoeddiger]

verify that it works as intended, then close