RICHARDS,
If you have to record the samples yourself with a mic, the quality won't be great (unless under studio setting conditions). The goal is to have individual samples of each note within each octave ... so to get the best quality, you would want to record at least 76 notes across the keyboard. Now you can use whatever recording device you have (hand held, computer ...), so long as you save the final individual wave files as *.wav.

Then you can proceed as above to load them and assign into the instrument. Recording using a mic into the AUDYA (to create your original samples) should be the last resort if you cannot capture the sound any other way.

Thanks

AJ

PS: You may also be able to purchase these samples on line (find who has already recorded this Vietnamese instrument and get the samples from them).