随着状语还是目的状语

When I was young I liked to listen to the radio, waiting for myfavourite song.

这里waiting for是做随着状语还是目的状语？

When I was young I liked to listen to the radio, waiting for my favourite song.

不是 waiting for，而是整个分词短语。目前分词不能作目的状语，剖析为随着状语或缘由状语均可。