Is there a way to fast forward the running song to the end to check the voicetrack and start of second track?
Not exactly. 
You can either right-click the Playlist and click This Playlist…, PFL; or you can select items, right-click and click Mix Editor and/or Selection PFL.
If that’s not what you mean, please let us know and we’ll try to help.
BFN
Cad
Okay, thank you!