Hi Desmond,

> I a bit curious abt Pali canon.In
> which langauge did the Buddha exound the Dhamma in?

In Ardha-Magadhi, which was later standardized as 'Pali'.

See:
http://www.lioncity.net/buddhism/index.php?showtopic=21867
http://www.lioncity.net/buddhism/index.php?showtopic=21924

Best regards,

Dmytro