Stereo systems and speakers are considered electronic waste or e waste.This means that your stereo system and speakers require specialised recycling through special e waste recycling services. Council transfer stations usually offer e waste collection bins.If your stereo systems and speakers are in good working order then find a new home for them. Sell your electronic or donate to your local Op shop.If you have a turn table, think about selling it online as there are likely to be plenty of buyers for it, especially if it still works.