"That's Why God Made the Radio", "Think About the Days" and "Spring Vacation" (as heard on a Dutch radio) and the merged snippets of Amazon and iTunes added up to 22 min 20 s.
If you add those new 30 s samples for the songs we haven't heard in full, and these snippets are things we hadn't heard before, you have to add 9 times 30 s = 270 s = 4 min 30 s.
So technically we've heard 26 min 50 s of a 38 min 53 s album, or 69%. More if you count the Mike-only version of "Daybreak"...

