3 CDs of Classic RPG Sounding Goodness
This is an excellent soundtrack. It of course helps when you recognize the songs from the game. Luckily, Chrono Trigger encourages going through it multiple times.

One of few game soundtracks you should own
If you're a fan of Chrono Trigger and its beautifully-done in-game music, this is worth a look.

Keep in mind that this product has IN-GAME music. I bought this thinking that it was the actual real-world orchestral and symphonic pieces. This was not the case, unfortunately, but there are fan sites that have accomplished real-world pieces and have them available for download.

It's not worth the original amount, so snag a new or used copy from alternative vendors. $20 isn't bad for in-game music that deserves to be furthered.

It's a knock off.
The official Chrono Trigger OST has 3 discs. This version has some of the major tracks on it, the audio quality is good, but Caveat Emptor (buyer beware) this is a Chinese knock-off.

Oh and if you buy the 3 disc version, make sure the cover does not have a green and red logo reading "FX", for this is also a counterfeit. The serial numbers on the real soundtrack CDs are PSCN-5021, PSCN-5022, and PSCN-5023.

Soundtrack to the PS game
Disc One (74:12)
1) A Premonition 0:36
2) Chrono Trigger 2:33
3) Peaceful Days 2:45
4) Guardia Millenial Fair 3:18
5) Wind Scene 3:21
6) Mystery of the Forest 4:47
7) Frog's Theme 1:17
8) The Kingdom Trial 3:45
9) Lavos' Theme 5:10
10) Reckless Robo Gang Johnny 1:43
11) Robo's Theme 1:31
12) The Brink of Time 2:32
13) Delightful Spekkio 2:47
14) Decisive Battle with Magus 2:44
15) Corridors of Time 3:02
16) Zeal Palace 3:58
17) Sara's Theme 2:44
18) Undersea Palace 3:20
19) World Revolution 3:52
20) Epilogue ~To Good Friends~ 2:26
21) To Far Away Times 4:15
Bonus Tracks
22) Chrono and Marle (Arrange Version 1) 0:38
23) Chrono Trigger (Arrange Version 1) 2:03
24) Ayla's Theme (Arrange Version) 1:31
25) Frog's Theme (Arrange Version) 2:00
26) Chrono Trigger (Arrange Version 2) 0:35
27) Chrono Trigger (Arrange Version 3) 0:27
28) Sara's Theme (Arrange Version) 1:40
29) Ending ~ Burn! Bobonga! ~ Frog's Theme ~ To Far Away Times (Arrange Version) 1:04
30) Chrono and Marle (Arrange Version 2) 0:39

The Best of Chrono Trigger
This CD is great for those who don't wish to pay over twice as much for the full OSV. Not only does it include most of the best tracks from Chrono Trigger, but it also features most of the arranged tracks from the PlayStation remake of the game. The only possible downside is that it has rather sparse liner notes (a mere few paragraphs of interviews), but the great selection more than makes up for this.