Its all good
Caps can be used to filter power(it goes pos to neg and discharges its power if you have a small dip in power to keep it stable) this is why some things work with them gone.
They can also be used to block DC in audio(AC). If missing from that part of the system, you would just have no sound on the card(single channel, but those caps look awful big for dc blocking).
No harm should happen.
Ohh yeah low pass/high pass filtering can be done with caps + coils as well(even by mistake)