IELTS exam Listening Practice Tests

The British Council
has an excellent site to help you prepare for the IELTS exam.  They provide various listening materials and practice questions which relate to the 4 sections of the test.
IELTS Exam 1 Section 1IELTS Exam 1 Section 2IELTS Exam 1 Section 3 and 4

Oxford University Press
also have a full listening exam online.  Complete listening exam with audio and answers

Exam English Listening exam

iTests offer a free listening and reading exam for IELTS.  All you have to do is register and then you can do the exams. have a listening exam- when you've finished a section you choose show the answers at the bottom.
Section 1Section 2Section 3Section 4