Piano/keyboard won't work through imac

Try to connect to other input lines. If your computer has an input line except for mic input try to connect to it. Then configure the settings in your computer, go to the CONTROL PANEL on your computer click SOUNDS & AUDIO DEVICES then configure SOUNDS or AUDIO or VOLUME or VOICE. Then look for the device listed in your system that is available and compatible, then select the most appropriate. After that click APPLY then OK. There you go.

If this solution Doesn't work you must buy a sound card and for sure it will work. Having a sound card gives you several input lines and there is a particular input line for musical instrument like a keyboard in a sound card device. Installing a sound card is easy, and i'll show you. First you must insert your sound card device into your motherboard's PCI slot (most of the motherboards have 3 PCI slots) choose one and take note that your PCI sound card plugs in exactly in that slot so its very easy. After inserting your sound card install the driver for your sound card, install is easy just follow instruction. If you have done this, there you go.
Good Luck!
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