192 is too low quality for music IMO. Fine for spoken word/audio books, though.

First of all, compress the audio. There's no need for extreme high fidelity in this case. V0/v2 mp3 is plenty of quality.

After that we're talking about 10s of gigabytes. If you want it to last as long as possible, I would upload to two separate cloud storage platforms, s3 glacier storage being one of them. Then make at least 2 physical copies, they can be flash media or blue ray DVD. Be sure to backup any passwords for the cloud providers ect..