Rising of the Phoenix - Menu Song

First of all, the track sounds nice and may be good for the menu. So it probably is worth recreating the samples (if you can't get permission).

Sound samples themselves BTW are already "as good as it gets" usually regarding editing, and thus should qualify as their own "source". So all you need is the permission from the author, no extra files.

One small suggestion - can you try rendering at 48000Hz instead of 44100Hz? Most users have a 48000Hz sound chip, and thus any 44100Hz music file would get resampled on playback.