Please describe the problem:
I noticed that when listening to an internet radio station rhythmbox uses a lot or processor power to do so. If I add the cpufreq applet to the panel, I constantly see the processor at the higest possible speed a large portion of the time. According to top rhtymbox uses between 25-30% of the cpu.

Steps to reproduce:

1. Add internet radio to rhythmbox, in my case npr: http://umtv-live.rs.itd.umich.edu/wuom/miradio32k.m3u
2. Play internet radio.
3. Obseserve rhythmbox use 25% of the cpu and eat your laptop battery away.
4. Pause rhythmbox, watch rhythmbox use 0% cpu.
5. Play a regular mp3 file... watch rhythmbox use < 10% cpu power.
6. Play internet radio again... watch the cpu spike again.


Actual results:
My laptop battery hates me.

Expected results:
After listening to internet radio for about 2 hours... cpu time on rhythmbox is about 35 minutes.

Does this happen every time?
Yes.

Other information:
I'm using Ubuntu gutsy and rhythmbox is using the gstreamer pulse audio backend.