Legal reasons as to why no music when playing games?

Do you guys think there are legal boundaries or copy rights that don't allow Sony to let you play music during games? I am kinda...actually really disappointed that we couldn't play music on PSP and I really hope the PS3 changes that because I dumped my entire iPods library on to my PS3 but would like to you know...actually listen to it?

:|

:cry: 

you can do it in some games for psp. gta LCS lets you, but it's too much trouble for me to bothertheflyingcow40