ShredDB is an experimental .shred library, I removed the audio so it's pretty useless. You can find the source .psarc files here.

Song	Artist	Play	Shred	Length	Album	Year	Tuning	Uploader	Updated	Delete
Robototron	Evil Scarecrow			3:59	Crowcifiction	2006	D Standard	mute	1970-01-01
Rock Bottom	House of Lords			3:54	World Upside Down	2006	D Drop C	mute	1970-01-01
Rock N' Roll High School (Original)	The Ramones			2:23	Greatest Hits	2006	E Standard	mute	1970-01-01
Rock This Party	Bob Sinclar			5:34	Dance	2006	E Standard	mute	1970-01-01
Rogues	Incubus			3:59	Light Grenades	2006	E Standard	mute	1970-01-01
Rollin On	Black Stone Cherry			5:39	Black Stone Cherry	2006	Eb Drop Db	mute	1970-01-01
Rom	Korol i Shut			2:44	Prodavec Koshmarov	2006	E Standard	mute	1970-01-01
Rooftops	Lostprophets			4:16	Rooftops	2006	E Standard	mute	1970-01-01
Rooftops (A Liberation Broadcast)	Lostprophets			4:16	Liberation Transmission	2006	D Drop C	mute	1970-01-01
Room 409	Bullet For My Valentine			4:04	The Poison	2006	D Drop C	mute	1970-01-01
Rosetta Stoned	Tool			15:03	10,000 Days	2006	Drop D	mute	1970-01-01
Rough Landing, Holly,	Yellowcard			3:38	Lights and Sounds	2006	E Standard	mute	1970-01-01
Roxas	Yoko Shimomura			3:34	Kingdom Hearts 2 Original Soundtrack	2006	E Standard	mute	1970-01-01
Run, Gunner Recall, Run! The Town Wants You Dead!	The Prize Fighter Inferno			3:38	My Brother's Blood Machine	2006	Eb Standard	mute	1970-01-01
Runaway	Jamiroquai			3:46	Runaway	2006	E Standard	mute	1970-01-01