You don’t have to buy a couple of Technics SL-1200MK2s ($750/piece), but have a try with the neat freeware tool from MonoRAVEIK: the MR1200. A Windows program of only 152 KB(!!) that emulates a 1200 really nicely. Start up 2 of them, drop an MP3 on both, start the first and then try to beatsync the second while the first is playing (even more realistic: play the first song at 110dB and use headphones on one ear to monitor and beatsync the second song). The Nudge/Twist system is not a sensitive as your fingers holding back or speeding up the vinyl, but it will give you a pretty good idea. Give it a spin!
* Platter behaves exactly like a real record deck – grab it and it stops, pull it backwards and it plays backwards.
* Platter can also emulate the jog wheel on a CD deck.
* Vinyl groove simulation for a “picture” of the track – spot those quiet bits!
* Choice of +8 or +20 pitch control, with separate fine tuning.
* Nudging and twisting emulation.
* Real instant start.
* Cue points.
* Reverse play.
* Pitch control inversion.
* Quartz lock.
* BPM counter (manual)