I found about this from Dartannian's mention in the "So what're you playing nowadays" thread (which I rarely check).

The game is an indie puzzle game on Xbox Live and Steam.  The soundtrack - the first three or four tracks in particular - is a very nice, relaxing collection of Celtic music from the Magnatune label.  For any whose familiarity with Celtic music is limited to the likes of FFIV Celtic Moon (which would be a bit of a travesty), it's a completely different sound from that album, with more piano, a slower tempo and deeper tones.

Sadly the only way to officially acquire the soundtrack album is either through Steam (if you've bought the game) or through a monthly $15 subscription to magnatune.com, which is pretty ridiculous.  In any case here's a link to stream the album; for those who like it I will leave it to them how to best go about acquiring it.

http://magnatune.com/artists/albums/braid-soundtrack/

Wow, are there still people who haven't heard of Braid!?
Pretty much everyone was talking about it when it was first released years ago.

Not many people mention the music though, which is indeed really good.
Too bad there's only so few tracks.

Yes. Well, less so now.

Yes.

I can see why!

The music especially had me hooked, besides the graphics and gameplay.

I only started to take notice of Steam since April of this year, since my dissatisfaction with modern console gaming reached an all-time record high. I knew about Steam as far back as high school (that was...wow, almost 10 years for me, now) but never took Steam seriously; then again, back then, I didn't have a computer that could handle those games, anyway, but the idea of paying for digital games was like "Psh!"

To be fair, that's what my 13 year-old cousin has to say about indie games. He likes EA, all those grey-colored FPSes, and having to pay extra for content that should've been part of the retail release of the game.

These days, though, as far as I'm concerned, Steam is hotter than chicken-fried rice!

Dude, I like Steam so much, I'd consider buying t-shirts with the Steam logo on them. IF they made them.

You still don't have to pay for digital copies of games such as Braid, since you can go on amazon and get it on DVD for about $10 delivered, and it is a GENUINE legitimate copy. Personally, I'll take a disk over digital any day. Also, many indy games have non-digital releases, often with a bunch of goodies!

By the way, you can get the Braid Soundtrack on amazon.
$7.99 for the entire album!

Now that is some useful info.   Had no idea it was available there.  I don't suppose anybody can one-up it and recommend a place that sells it in FLAC?  Otherwise Amazon MP3 it is.

You may be aware of this already, Adam, but all of the music in Braid was licensed from other albums, as detailed here.  If you're looking for more music in this style, you might consider tracking down the source albums.

If I'm reading the Magnatune site correctly, the monthly subscription allows you to download the music on their site and they support a variety of formats (including lossless). I'm not sure if the Braid soundtrack in particular is lossless, but it might be worth a shot.