when I’am recording my old cassette tapes the playback speed is much faster than the original,
can anybody help with my settings what am i doing wrong 
Are you using a USB cassette player?
What are you recording on? A Windows 7 laptop?
Is the pitch normal?
Thanks Steve for the reply
using my external tape player into line in on back of computer,
with Realtek HD audio manager
it plays back at the right speed when it stands alone on my external tape player
O/S using windows 2000 xp professional
pitch is narmal ! (what is narmal ?)
If the Audacity recording is playing back too fast, but at the correct pitch, then there must be bits of data missing. See these two links for possible causes/solutions:
http://manual.audacityteam.org/man/FAQ:Recording_-_Troubleshooting#skips
http://wiki.audacityteam.org/wiki/Managing_Computer_Resources_and_Drivers