Speeding Songs Up

NOTE: I don't remember the tutorial fully, and I didn't backed up the tutorial on RVLution, before it was defunct (I'm rewriting it), so if there's something I missed, please feel free to point it out. I only posted what I have remembered.

Requirements
-A hex editor (I would recommend PSPad, download here).

-Your BRSTM file you want to edit (and also a way of playing it; I would recommend using BrawlBox to listen to your BRSTM file).

-A website/program to convert decimal numbers to hex, and the reverse (if you don't have any, you can use this website here, and for the reverse, this website here).

Step 1
Make a backup/copy of the original BRSTM file, just in case if you mess something up. Then open the BRSTM file with PSPad and hit, make sure   is selected and go to offset 0x63 (by typing " " {without quotes} in the "Bytes" box): 

Step 2
The Hex number at offset 0x63 is the BRSTM file's sample rate (in Hz). Copy 3 bytes of the value (as highlighted below): 

The value would constantly be 0x007D00 (or 32000Hz in decimal) or 0x00AC44 (or 44100Hz in decimal), but not always.

Step 3
Paste the 3 bytes (that you copied) into the hex to decimal converter and convert it.

Step 4
Add the number 6000 (or more) to the decimal number (for example, if the number is 44100, it would be 44100+6000 = 50100), and convert it back to hex (using the decimal to hex converter website I provided you). Just note that the maximum number for the sample rate is 0xFFFFFF (or 16777215 in decimal). Copy the 6 characters (of the hex number) in the  box, starting from the end: 

At hex offset 0x63, select 3 bytes, and then paste the hex number you copied. Make sure to select, and  , otherwise the hex value won't be pasted in properly:



Step 5
Once you're done pasting it, it should look something like this: 

Then save the BRSTM file and play it to see if it sounds good, if not, just repeat these steps again, until it sounds good.