[holzberg]

Yes, you can add new sounds/combos to this plugin. On my server I have over 300 words and close to 400 sounds.

If you read the format you can create combos like this:
pd_sound "ha ha" "haha.wav"
pd_sound "ha ha" "haha2.wav"

That will make a random sound.

Yes, if you have rcon you can add sounds. amx_rcon works fine as well:
amx_rcon pd_sound "ha ha" "haha.wav"

However, It is much easier to change the sounds.cfg file manually. Also, you need to upload the new sounds to the server so it is a pain to add them in-game.

I also like the format of the cfg better than sank sounds. 1 line - 1 sound file. Much more clear to edit.

Psychoguard gives much credit to Sanky because it was built off of his.
There was never Sank Sounds for amx because Psychosounds worked flawlessly and was ported over correctly and made more efficient. On the amx website Psychoguard posted his plugin with (Sank Sounds) just as I did, so it should stay

It is a preference of what you want. I suggest people try both and decide which one they like.