WAVE provides a sample column in the patterns for a one of 7 samples which are also shown in the Sample viewer in the bottom left corner of the editor screen.
Samples in WAVE are always played on Channel C at 10Khz and have 4 bit resolution. They do not prevent Channel C playing its own music but they are best heard with Tone and Noise Off.
They also play concurrently with all editor operations so be afraid to play with them. Unlike other players they will not interrupt operations.
Samples occupy either the upper or lower 4 bit nibble. 8Kbytes are assigned to Samples.
This effectively provides 16K of Sample space.
Each sample entry is 4 bit but a further constraint is added in that the end of the sample is always when a 4 bit value is Zero.