get rid of all of that
as for iTunes, you can do that, but i personally wouldn't recommend it. while iTunes has nice integration with the iPod(not sure if you have one), it has many bugs(the ID3 one being the most notorious) and it uses a LOT of resources.
right now, i use a freeware player called foobar2000 which is very light on resources, has a large userbase, friendly forums, and a lot of plugins(there is also a plugin in alpha stage called foo_dop which can let you integrate foobar2000 with your iPod).
but then again, it's your comp so you can do whatever you want to do with it