So, if you want to play your favourite song/movie on OLPC use Jukebox.activity. Started working on this for the last few days after Sayam pointed me to the activity. It was almost in a stagnant condition. My PyQt mind was someway different than writing this PyGtk stuff :) Sayam helped a lot. The following features added as of now:

• Full Screen option
• Volume Control support
• Supporting m3u playlists
• Internet radios through m3u files.
• Next/Previous buttons , if you open a playlist with more than one song

Will do a formal release within this weekend. I have a .xo file ready for testing. Please provide your feedback :D If you want to start writing your own activity , start from this.