Here’s another week’s worth of free MP3s that are totally legit and yours for the download. Follow the links to add these 100+ tracks to your digital library while they’re up:

Andrew Bird – “Hot Math” via WXRT-FM

S. Carey (Bon Iver’s drummer) – “In The Stream” via Amazon MP3

Cloud Nothings – “Hey Cool Kid” via RCRD LBL

Gold Panda – “Snow & Taxis” via RCRD LBL

Hot Chip – “Grown Up Hits” Summer 2010 Tour Mixtape via SPIN

Ima Robot – “Ruthless” via Amazon MP3

Interpol – “Lights” and “Barricade” via Interpol’s official website

The Knocks – “Thinking About You” and “Dancing With The DJ” via The Knocks’ Facebook page

Labrinth – “Let The Sun Shine” (Outlier Remix) via Arjan Writes

Jared Lee – “It’s Over (Goodbye)” via Arjan Writes

Mt. Desolation – “Bitter Pill” via Amazon MP3

Penguin Prison – “Golden Train” (The Royal Palms Remix) via Arjan Writes

Pixies – Doolittle 20th Anniversary Live EP feat. “Gouge Away,” “Monkey Gone To Heaven,” “Crackity Jones,” and “Dancing The Manta Ray” via Pixies’ official website

Ra Ra Riot – “Boy” (RAC Remix) via SoundCloud

Mark Ronson & The Business Intl – “We Used To Wait” (Arcade Fire cover) via StereogumRTP – “All That’s Left” (RAC Remix) via SoundCloud 

Spank Rock – “What It Look Like” (Todd Edwards Remix) via RCRD LBLStarsmith – Annie Mac Minimix via SoundCloud 

Starsmith – “Give Me A Break” (Radio Edit) via Pure Groove
Starsmith – “We Leave Tonight” via SoundCloudRod Stewart – “I’ve Got You Under My Skin” via Amazon MP3 

Superchunk – “Digging For Something” via Amazon MP3

Bjørn Torske – “Bergensere” via XLR8R

Warpaint – “Undertow” via Rough Trade Records

Kanye West feat. Mos Def, Lupe Fiasco & Big Sean – “Don’t Look Down” via Kanye West’s official site

Weezer – “Blowin’ My Stack” and “Getting Up And Leaving” via Weezer’s official site

Various Artists – Germs Of Perfection: A Tribute to Bad Religion, featuring Tegan & Sara, The Weakerthans, Ted Leo, and more via SPIN

Various Artists – LSTN #12, 25 tracks from Blonde Redhead, No Age, Avey Tare, Warpaint, and more via Urban Outfitters

Various Artists – Mexican Summer Vol. 1, a 15-track label sampler feat. Best Coast, The Soft Pack, and more via Amazon MP3

Various Artists – Sarathan Records Indie Sampler, 7 tracks from War Tapes, Sensation Junkies, The Purrs, and more via Amazon MP3

Various Artists – SPIN presents Subway Tracks: The Best of CMJ 2010, a 29-track new-artist sampler via SPIN

Get tipped to these freebies as the week unfolds by following @Popservations on Twitter.