Pics and Music won't be an issue. Turbo Tax transfer how-to is here:

http://turbotax.intuit.com/support/iq/Copy-of-Return/How-do-I-transfer-my-tax-return-from-Windows-to-Mac-/GEN12225.html

Here's some information on migrating Office files from PC to Mac. You will have to buy Office for Macintosh first.
http://support.apple.com/kb/HT2518?viewlocale=en_US

The only experience I have with this is moving Word Files. Sometimes fonts and formatting don't survive the process and have to be redone. I think it might depend on how the files were originally saved on the PC, but don't know for sure. I've noticed this a few times when the wife brings something home she did at work on a PC and wants to work on at home. Not a huge issue.

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