the number after the word only indicates what tone it is.
always good to review which tone is which :
shi1 = shī
shi2 = shí
shi3 = shǐ
shi4 = shì
shi1 = shī
shi2 = shí
shi3 = shǐ
shi4 = shì
http://www.mdbg.net/chindict/rsc/audio/voice_pinyin_cl/shi2.... (shí)
http://www.mdbg.net/chindict/rsc/audio/voice_pinyin_cl/shi3.... (shǐ)
http://www.mdbg.net/chindict/rsc/audio/voice_pinyin_cl/shi4.... (shì)
For the falling-then-raising (shǐ) changing the "shi3" to "chi3" in the URL gives a better idea, I think, for what the inflection sounds like.