Complex sentence: Ishimoto rearranged, remixed and re-recorded the soundtrack for "Type-0 HD" as the original soundtrack, composed within the limits of PSP hardware, was unsuitable for the new console release.
Split into simpler sentences: Ishimoto rearranged, remixed and re-recorded the soundtrack for "Type-0 HD". As the original soundtrack was composed within the limits of PSP hardware, it was unsuitable for the new console release.