Ok, this has got to be the easiest way to record your music I have ever seen! A company, named Apogee, has come out with a tiny, and relatively inexpensive, device that let's you record your bass guitar, or treble thingy if you insist, directly to your iPhone, iPad, Mac, or PC!!! They call it the "Jam" and it's available in assorted flavors to satisfy a range of palates. It is currently available from the usual on-line music vendors.
Check it out:
http://www.apogeedigital.com/products/jam
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