be aware that SLICES numbers represent chunks of audio, if there are ‘only’ 16 Slices, then you start from SL1 to SL16 and you have to work out the Slices in AED (audioeditor).
Now the fancy information:
without SLICE mode the SL parameter is instead a STRT parameter where 64 is the startpoint at half of the recording sample length.
With a little math (128/16==8) the 16 step long recoding can also be used with STRT points [0,8,16,24],[32,40,48,56],[64,72,80,88],[96,104,112,120] == 128chunks in range of 0 to 127.
In that case you would use the LEN parameter in example with 8 and do your AMP stuff on it.
Not really a secret that samples which would come with 128 same sized wav-chunks, aka perfectly useable for 64 slice dont need slicing as long you do the math and side effect you get 128 ‘slices’ chunks. nice ha?