An electronic music speaker, amplifier or sound system.

Speaker

A square with an arrow within a button with rounded edges.

Exit Button Icon

A person sitting down, with his computer and headphones, participating in an online class, watching a movie or listening to music.

A building with a broadcast antenna with three curved lines, showing it's emitting something.

A round retro vinyl or a CD with a hole in the middle to play music. 

Rectangular horizontal exit sign with an arrow.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.