I hope it works when burning the disc.

thanks for that long explanation.

I notice if it c:

then, even burn a CD with files cd 2 + OST of the game, not work, because even so the volume of the music is bugged on current "windows"?

On Windows Vista and newer, Machines will always play music at full volume - which can make some sound effects and voices difficult to hear (even with the SFX volume turned up).

To make a new CD 2 disc image or physical disc with working music using files from the CD 2 ISO and the OST files:

I suggest using PowerISO to create the image (unregistered version worked for this despite usually having a 300MB size limit) and Daemon Tools Lite to mount it. PowerISO can be used to write to a CD if desired.

1. Run PowerISO.
2. Create a mixed-mode CD image.
3. Add the files from the Machines CD 2 ISO to the data track.
4. Add the OST music files as audio tracks.
5. Label the disc image as "MACHINES_DISK_2".
6. Save as MACHINES_DISK_2.BIN.

At this point you could try burning the image to a CD. It might actually be easier and more convenient than using it in a virtual drive. Default burning settings in PowerISO seemed to work fine.

Continuing instructions below are for mounting the new disc image in a virtual drive:

7. Exit PowerISO
8. Run Daemon Tools Lite
9. Mount MACHINES_DISK_2.CUE file (should be in the same folder as MACHINES_DISK_2.BIN).
   Ensure the virtual drive is assigned a drive letter "before" any existing physical disc drives. If you have a DVD drive assigned "E", the virtual drive needs to be A, B, C or D, otherwise Machines (probably) won't play the music.
   If you can't select the right drive letter using Daemon Tools Lite, you can use the Windows Disk Management tool to change it separately.
10. Play Machines.

Good luck, hopefully one of those methods works for you

mmm step 2 + OST CD ... okay? because that's what I understood you.

sorry my English, I'm from chile, and hopefully is something habeses also have to use the translator.

If you burn the Machines soundtrack to an audio CD (or create an audio CD image), the game might play that. Not sure if the track order and timing would be correct. Would probably need the Machines Loader to bypass the disc check.

Machines CD 2 would normally have the in-game music on it, but if you're using an ISO image file (like the one available from this site) the music won't be present, as the ISO file format does not support separate audio CD tracks.
A CUE/BIN format image of CD 2 may work - if one can be acquired. (maybe if someone asks Hayden very nicely)

Unfortunately the in-game music volume control doesn't work on modern versions of Windows (probably due to lack of a CD audio volume control - last time I saw it was Windows XP), so the music tends to drown out some sound effects.