To rockbox or not?

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I have Sansa Clip Zip. I was ready to install rockbox but then it said I had to go find a firmware file and blah blah blah. Seemed to complicated at the moment. I used the hestitation to talk myself out of installing it. I'm afraid that if I don't like it I will not be able to go back to the old OEM software.
I listen to SOME music but mostly listen to audio books.
Should I install it? Will I be able to get rid of it if I need to?

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