sandisk sansa clip zip with rockbox firmware and a fiio e6 amp. will take a 64gb card, is well under $100 and will blow your phone away. tiny but mighty enough to
SansaClip < Main < Wiki
Sansa Clip Zip (I suck at Doom so I'm already dead) : r/itrunsdoom
SanDisk Sansa Clip Zip 4GB Rockbox Installed FM MP3 Player - jromanolaw.com
It Runs Doom! — The SanDisk Sansa Clip Zip? Yeah, it runs Doom. ...
Review] Sansa Clip+ vs Clip Zip! | Headphone Reviews and Discussion - Head-Fi.org
SanDisk Sansa Clip Zip + RockBox - YouTube
SanDisk Sansa Clip Zip 8GB Rockbox FM/MP3 Player Dual Boot Color Choose | eBay
SanDisk Sansa Fuze 4GB Rockbox FM/MP3 Player Installed Dual Boot Color Choose | eBay
Sansa Clip Zip - Custom Rockbox Themes | Headphone Reviews and Discussion - Head-Fi.org
920x520 Sansa Clip Zip Rockbox, funky Google+ Cover Photo
SanDisk Sansa Clip Zip 4GB Rockbox SDMX22 FM MP3 Player Installed Dual Boot | eBay
Jack Whitham - Review: Rocking out with Rockbox
Jack Whitham - Review: Rocking out with Rockbox
Sansa Clip Zip - Custom Rockbox Themes | Headphone Reviews and Discussion - Head-Fi.org
The Rockbox Manual for Sansa Clip Zip - [download.rockbox.org ...
Sansa Clip Zip Firmware 01.01.20 - #80 by marvin_martian - All other MP3 players - SanDisk Forums