the 57SL already has serato built in...

Yeah but what is the difference between SL1 And the new SL3 box

New, Compact Hardware Design
Higher output improves ability to easily match levels of various source types
Improved Dynamic Range (104 dB)
Improved audio performance (24 bit converters)
Galvanic isolation prevents computer noise from interfering with the audio path
USB 2.0 high speed audio interface
Aux Input for Live Mix Recording or LiveFeed
Aux Out channel allows use of Sample Player as a virtual deck and opens the door for future expansion and creative configurations for DJs and electronic musicians
High-grade Phono Preamps upgrade performance of most mixers
Software switchable Direct Thru Connections for simplified connections
Independent Line/ Phono-level selection for each input for greater flexibility
Includes International Power Supply to insure optimum performance and easy transfer between DJs
Soft Carry Case Included

The boxes are different products to the ttm57sl. It's like comparing specs between a minivan and a sports car, apples and oranges.

Hi, i cant connect my new 57sl on my laptop which is 64bit.
Do you think its the drivers?

I have a gig tonight. Someone pse help.Thanks

Wheres your gig at?