Single-image slideshow

[Andy Robinson]

I feel a bit stupid asking this question but I've googled around and 
experimented and can't find the answer.

I have a single jpeg image and an mp3 audio file.

I want to use gst-launch to put them together into a video which simply 
displays the image while the audio is playing.

I'm sure it must be trivially simple but if someone could point me in 
the right direction I'd be grateful.

Regards,
Andy Robinson, Seventh String Software, www.seventhstring.com