How can I disable wifi while playing music with locked ipod touch?

Question

When I play music and lock the iPod touch, the wifi stays on which drains more battery than is needed. I don't want to turn off wifi in Settings since I like the flexibility to unlock the iPod and quickly check email, browse the web while listing to music (without going into settings, turn it on, browse, go back to settings and turn it off). Once I lock the iPod while playing music, I'd like the wifi to turn off. I know it will stay on while streaming that is expected, but why is the wifi staying on when playing music of the iPod?? Is there a way to do what I am asking? I don't recall having this issue with OS 1.x or 2.x. Also I have seen some posts asking for the opposite (leave the wifi on when not playing music and iPod is locked). These posts acknowledge that wifi stays on while playing music, so it seems to be 'feature' or bug in the OS.

Answer 1

henry is correct. you can't do that.
however, for what it's worth, i have found that wifi connection is similar to mobile phone network connection. i.e. if a phone is searching for a network, it takes up huge amounts of battery, but if it is constantly connected, it doesn't. so it is the 'search' procedure which drains the battery. similarly with my iPod touch. if it is connected to my home wifi network, but i am not using the wifi connection, the battery will not drain significantly. it's when i'm away from home and forget to switch it off that the battery drains. or when i am using it constantly (like listening to a 3.5 hr radio show using safari)