Rendering To Seperate Files

I often name my songs Artistname - Songtitle.rns
When rendering to seperate files my filenames er getting very long like i.e.:
Artistname - Songtitle_Open hihat.rns

I would like to have an option to disable/or just not entering a name for the songname when rendering to seperate files.

In my case I already know which artist and song it is since I always render it in the folder /Artistname - Songtitle.rns/multi track/

You get my point <_<