Well their are several ways to get sounds from gba games and none too convenient.
The obvious way by disabling sound channels and record.
The better quality way is to extract the sound from the rom but their isn't a definite way to do that that I know of.
I tried Sappy but it mostly gives music and not the sounds themselves.
For some roms you can import raw data into Audacity and just pick out the sounds but for RSE the sounds are too distorted.
As for a ds game you can simply extract the sound_data.sdat and all the sounds are inside and can be easily read and extracted.
I could probably get the sounds from Black and White or Diamond and Pearl instead
The obvious way by disabling sound channels and record.
The better quality way is to extract the sound from the rom but their isn't a definite way to do that that I know of.
I tried Sappy but it mostly gives music and not the sounds themselves.
For some roms you can import raw data into Audacity and just pick out the sounds but for RSE the sounds are too distorted.
As for a ds game you can simply extract the sound_data.sdat and all the sounds are inside and can be easily read and extracted.
I could probably get the sounds from Black and White or Diamond and Pearl instead