How do I transfer music from my PC to my iPhone 4?
I would use the iTunes sync function.
you will need itunes
Well, you can use a free iphone transfer to have a try.
Syncios iPhone to PC transfer is a free but awesome idevice manager which enbales you transfer music, images, videos, e-books and etc, between your iPhone, iPod, iPad and PC.
or you can just use audials tunebite, you convert the music files and then transfer them to your iphone or whatever device you're using: http://audials.com/en/converter_how_to/start/start.html
If you have it set to Manually Manage Music (can that be set on an iPhone? I remember a while ago it used to not be an option but I think that changed) then you can just drag and drop music from iTunes onto your iPhone in the sidebar and it will put it on.
Read the manual if you have one, or go to any music channels and pick what suits you best, with your search provider or here!
Using iTunes to copy music to iPhone -
If you don't like iTunes,then -
6 Ways To Sync Music To Your iPhone Without iTunes -
If your device is not jail-broken , use iTunes.
If your device is Jail broken , use Copytrans :)
well ofcourse you can just use itunes, but if you're device is jailbroken, and you we're so stupid to NOT install appsync, so that whenever your device is connected all your illegal apps dissapear, you can use: copytrans control center, just google it, its free (for music only).
The first choice for you is to use iTunes. If you don't like to iTunes by authorizing computer and entering account or have some trouble while using this way, you migh go for another way. I just googled a tool for transferrring music between PC and iPhone. http://www.iphonetransfersoftware.com/
Maybe you can have a try.