[linux-audio-user] upsampling wav's - ardour sessions

[MarC]

Hi,
I'm using ardour to record and I have recorded my songs at 44100 until 
now. Now I want to switch to 48000.
What's the easiest way (always within the best way to do it) to convert 
my sessions to 48000?
I would like something automatic like running a script before starting 
an ardour session at 44100 or clicking some option at ardour to import it.

I have googled this issue and I found:
http://sr-convert.sourceforge.net/

but it's not debian-packaged yet and I'm too lazy now...
maybe ecasound? but I'm afraid it doesn't consider so much things as 
sr-convert...