Because these sites use a range of audio applications, you may want to look at more than one for each heading to see which works best on the computer you are using.

Advice for improving your pronunciation of English

Examples of Australian pronunciation
Listen to and practise whole texts
Computer generated pronunciation of phrases you type
Grouping words and showing emphasis
Intonation or music in speech
Natural rather than correct pronunciation of phrases
Practice sentences
Dictionaries that will pronounce individual words for you
Language specific pronunciation problems
Natural rather than correct pronunciation of words
Stressed syllables in words
Pronunciation of easily confused sounds
Pronunciation of difficult groups of consonants
Pronunciation of individual sounds
Deciding what areas of pronunciation to work on
What you can do to improve your spoken english
Private practice strategy
Ten tips for accent reduction

Examples of Australian pronunciation

Most of the sites on the internet use British or American pronunciations. If you specifically want to practise Australian pronunciation, try these sites:

Evaluating english accents worldwide: sound clips
Sound samples by English speakers from around the world (mp3 & wav formats)
The Advertiser (needs Media Player - scroll all the way down to 'Recent Audio' )
ABC radio (ram, windows media & MP3 formats)
Sydney newspaper reports (needs Real Player & Media Player)
English pronunciation
Online pronunciation guides to 9 varieties of the English language and 9 other languages

Listen to and practise whole texts.

These links are just a start. Find other sites that match your own interests. If the computer you are using cannot read these file types, you may want to try practising sentences.

Dialogues (ra format - Making Friends; Apartment Hunting; At the Library; Asking for the Way; A Visit to the Advisor; Shopping; Going to a Party; Ordering Lunch; Going to a Movie; Dating)
Story archives from CNN (ram format sound & video)
Songs (flash)
Ghost stories (ram format)
Listening passages (ram format - Community Service; Sports; Education; Foreign Customs; Travel)
Simple dialogues (mp3 format - Asking About Someone; Describing Work; Daily Schedules ...)
Just for fun (text only - Try to Pronounce a Ridiculously Difficult Poem)

Computer generated pronunciation of phrases you type

Multi-Lingual text-to-speech (wav, au, aiff & basic sound files - this pronunciation does not always sound natural, but it's a starting point)

Grouping words and showing emphasis

Stress on content words sounds better than stressing every word (ram format - close the pop-up advertising and scroll down to 'Some Examples')
Thought groups (wav format)
Speech divided into chunks (wav format - 8 page tutorial)
Saying some words more quickly than others (text only - close the pop-up advertising)
Sentence stress in English (wav format)
Focus/Stress on the most important word (wav format - 7 page tutorial)
Matching rhythmic patterns game (java)

Intonation or music in speech

Differences in pitch (wav format - 15 page tutorial)
Emphasis changes meaning (wav format)
Emotional and expressive synthesised speech (au & wav formats - no explanations, but lots of examples to listen to)
Personality differences in voices (ram format - no explanations, but lots of examples to listen to; click on 'Male Voices' etc.)

Natural rather than correct pronunciation of phrases

Linking words together (wav format)
Common phrases (wma format - examples with sound files)
Liaisons - explanation of linking between words (text only)
Short explanation of linking consonant to vowel (text only)
Short explanation of linking vowel to vowel (text only)
End of word sound changes (text examples only)
Relaxed pronunciation (text examples only)
Reduced rorms used in daily speech (text examples only)

Practice sentences

English pronunciation practice 1 (ram format)
English pronunciation practice 2 (ram format)
Difficult drill sentences (text only)
Tongue tanglers (text only - roughly alphabetical)
Lots more tongue twisters (text only)

Dictionaries that will pronounce individual words for you

Encarta World English Dictionary (wav & aiff sound files)
Merriam-Webster (many file formats - can adjust automatically for your computer; this site also has a thesaurus and a reverse dictionary that can be very useful for writing)

Language specific pronunciation problems

Language based directory of difficult sounds
(Arabic, Chinese, Dutch, Farsi, Finnish, French, German, Greek, Gujurati, Hawaiian, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Khmer, Korean, Lao, Polish, Portuguese, Russian, Serbo-Croatian, Spanish, Swedish, Tagalog, Thai, Turkish, Urdu, Vietnamese, US-Southern)
Common mistakes in English by language background
(All languages, Arabic, Chinese, Croatian, Dutch, Farsi, French, German, Greek, Hungarian, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Swedish, Taiwanese, Thai, Turkish)
Pronunciation problems for Cantonese speakers
(text only - also useful for speakers of other languages)

Natural rather than correct pronunciation of words

Reduction of syllables that are not stressed (wav format - lots of examples with sound files)
Disappearing vowels (ra format - example words and a few sound files)
Just for fun (uses flash - learn to speak like Kath & Kim)

Stressed syllables in words

Word stress (wav format - general rules for word stress & practice)
Word stress in phrasal verbs (rm format)

Pronunciation of easily confused sounds

Descriptions, diagrams and video clips to show the differences between pairs of sounds (mpeg format; heat/hit; head/hate; hat/hot; hoot/hood; hoot/hut; hoed/hoot; ought/hot; oy/how/height; bit/pit; mit/knot/sing; thy/thigh; did/ted; rid/lit; sit/zit; fit/vittles; ship/measure; git/kit; chip/jet )
Listen and repeat tongue twisters to improve problem consonants (aif format - j/z/sion; th/t; l/r; p/f; sh/ch)
Sound files and listening practice for pairs of words (ram format - close the pop-up advertising; 'au'/'ir'; 'ae'/'eh')
Minimal pair practice and quizzes (mp3 format - ferry/very; late/let; lake/rake; ferry-very; late-let; lake-rake; fond-found; these-Z's; said-sad; best-vest; not-note; thick-sick; bus-boss; see-she; made-mad; run-rung; look-luck; climb-crime; hot-hat; they-day; run-ran; lugs-lungs; not-nut; thought-taught; eat-it; few-hue; and more)
The Big 6 - explanation of common problems with particular sounds (text only - Bat/Bought/But; T; R; L;TH; I and E)

Pronunciation of difficult groups of consonants

Example phrases and sentences for clusters with 'r' and 'l' (mp3 format)
Example phrases and sentences for a variety of clusters (mp3 format)

Pronunciation of individual sounds

All sounds

Animated diagram of each consonant and vowel (QuickTime 4 - description of how the sound is produced, and video of the sound spoken in context)
Interactive sagittal section (no audio - change the settings on a diagram of a mouth and see which sound is produced)

Consonants

Description and sound files for all the consonant sounds in English (wav format)
Sound files and sound spelling pattern for consonant sounds (ra format)

Vowels

Description and sound files for all the vowel sounds in English (wav format)
Sound files and sound spelling pattern for vowel sounds (ra format)