This is needed e.g. for the "Slide transition sound" files
where we want to play files and also give the choice whether to link or not

Change-Id: I5aaef7152be8e5c0a0f88c4d7234926f233c5d92
Reviewed-on: https://gerrit.libreoffice.org/26846Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>