I have had the complete opposite experience with custom soundtrack. The last 7 games I bought have had custom soundtrack:
1)Killzone 2
2) Flock
3) Burn Zombie Burn
4) Pixel Junk Shooter
5) Zombie Apocalypse
6) Final Fantasy Crystal Defenders
7) Astro Tripper
Though I have a ton more that support the feature, I do have some games that I wish did support it as well (condemn 2, Chronicles of Riddick, Mercenaries 2, & Mirrors Edge).








