Is it posiible to mention both cdrom and cdrom1 in the CD ROM device
Well, what would that achieve? Why not just put the VCD in the correct drive and play as usual? Not to mention you'd run into the possibility of having a VCD in both drives. Then how would it choose which one to play? It adds a lot of unecessary complexity. If, however, you're trying to run two VCDs at once you'll have to run two instances of (g)mplayer.