HI THERE I HAVE READ ALL THE REPLIES AND THEY ALL GIVE GOOD ADVICE..YOU MUST ALSO THINK OF THE EXTRA DISC PLAYER, MICS,REVERB ,CABLES ETC AND THE SPACE YOU HAVE IN YOUR VEHICLE FOR CARRYING IT..REMEMBER YOU ALSO WILL NEED TO TRANSPORT A TV SET...I HAVE MY WHOLE SET UP..MUSIC AND KARAOKE ON EXTERNAL HARD DRIVE AND ONLY CARRY A CD WALLET CONTAINING AROUND 80 DISCS INCASE THE PC NEEDS TO RE-BOOT.. I ALSO USE A FLAT SCREEN TV AND IF YOU GET THE RIGHT SOFTWARE THEN YOU CAN SHOW THE KARAOKE ON THE SECOND TV AND STILL BE ABLE TO USE THE PROGRAMME ON THE PC..IF YOU GET STUCK GIVE US A CALL