Another user said they hadn't been able to find an MP3 version of the score for sale on Amazon. The link I posted was for that version, but I wasn't sure whether you were allowed to buy it outside of the US (sometimes there are restrictions on where digital content is allowed to be sold for some stupid reason).
The person who had originally asked for this has since posted a version for sale in Europe, which can be found here.
http://amzn.eu/a2Vcqvt