basically not in the way envisaged. With the HX6 hard drive I used a laptop for backup and drive loading and housekeeping, but downtime was minimised by using the HX6 not the laptop.
You could use the 6k as glorified speakers playing mp3s and midis (but not technics files) from the laptop (basically as a kind of DJ) but this naturally limits live auto accomp playing unless you use windows midi programs to load into and play along with, and then there remain dependability, speed of loading and setup questions, and sound quality issues compared to loading technics files. To use a laptop on stage I would have only the operating system (with all superfluous functions disabled or removed) and the music program(s) required loaded and nothing else on a dedicated machine for maximum reliability.