If I used jailbreak in windows in order to unlock my phone can I use my mac to modify without having to redo...I could not figure out how to unlock my phone with mac so I used windows..the songs I put on my iphone are from my mac...

1)can I use my mac to further modify my iphone
2)so with my phone in a modifiable state can I go around and get music from different computers...or does it not work like that..