@Jain I scour through audiophile forums from time to time, and the consensus is that as long as you're human 44.1 khz is just fine, 48khz is already technically overkill.
@icedquinn Are you sure it was 200khz? That'd be a very unusual frequency for an audio file. What usually gets used is multiples of 44.1 or 48. I've yet to see an audio file over 192khz or hear of equipment that plays anything above that.