33? r.p.m. records

• Old records ... or a hint for this puzzle's seven longest answers
• Groovy collection?
• Forebears of CDs
• Platters, briefly
• Breakable records
• Some turn at 33 1/3 rpm
• Musical objects with a single groove on each side
• Audiophile's "vinyl"
• 2015's fastest-growing music format

Wikipedia Word definitions in Wikipedia
LPS may stand for: