you can do this with multi samples. For instance, take the 2 kicks and put them into a single wav file. Most wave editors will let you create this- either via copy paste or with a file merge function. Now import that to the S2400 and use multi slice mode. Set the slice points so that pad 1 triggers kick one, pad 2 triggers kick two, etc.
Now when you record your pattern, you can use kick 1 in pattern 1 and kick 2 in pattern 2 or kicks 1 and 2 in pattern 1 and 2 It will also help with polyphony savings in addition to adding some creative choke options. Say you had a punchy kick on kick one and a long 808 on kick 2, you could use the 2 to choke each other.
yep - this amazing concept called sample chaining. you can keep a whole library of single hits, loops etc in a smaller number of files; some really amazing things have been done with sample chains and the octatrack. I think some pretty cool stuff could be done on the s2400 as well, although we’re limited to 8 slices (ahem@Mickey )