Changes

In this case, the only way to test that the data is correct is to make multiple transfers of the program and test each thoroughly (e.g. if the program is a game, you would play the game to the end), checking for graphic corruption and bugs. If all of the transfers operate the same, then you can assume that the data is correct.

There are numerous Audio file formats, each of which can store audio, but each has it's own structures and representation for the data.