Radio Uno of RAI is the primary source of Calcio. They feature national team matches, selected matches from Coppa Italia, Serie A, the Champion's League and the UEFA Cup competitions. They seem to including all the evening Serie A matches (typically 11:30 AM Saturday and Sunday Pacific Time), as well as round robin coverage of all the mid-day Sunday matches, the standard kickoff (around 6AM Pacific).
Click the ":Listen Live" icon to access the RealOne Media feed. Their servers seems to be reliable and we have never seen them run out of available streams.

On their website Radio 1 maintains an archive of some past matches.

In London on Sundays at 2PM (London time) Spectrum Radio, 558 AM, presents a weekly Italian variety which on matchday is predominated by "calcio minuto per minuto" via satellite connection to RAI.

Atalanta 

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Genoa 

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Cagliari 

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Juventus 

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Napoli

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Empoli 

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Fiorentina 

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Internazionale Milano 

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Historicaly Inter has provided audio streams from thier website. We have found pay to view links to Inter TV. Free links to audio only may still be availble.

SS Lazio 

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Lazio matches are broadcast and streamed by RadioRadio of Rome.

Livorno 

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Messina 

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AC Milan 

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AC Milan now makes live match commentary, as well as live video, available for a charge of 39.50 € per year, or 3.95 € per month.
In addition, in Milan, Radio Zeta broadcasts the matches over the air. The station also streams to the internet. They have been streaming the matches at no charge, click "Listen Live"

Palermo 

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Parma F. C. 

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AC Parma now makes live match commentary, as well as live video, available for a charge of 39.50 € per year, or 3.95 € per month.
Click on the team emblem for the AC Parma website.

Reggina 

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The team coverage is now provided by Touring 104 radio.
Windows media format with embedded player.

Roma 

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Roma matches are broadcast and streamed by RadioRadio of Rome.

U. C. Sampdoria 

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A. C. Siena 

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Torino 

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Udinese 

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Radio Radio 

Roma and Lazio games are broadcast on RadioRadio. The station is streamed using both the RealOne and the Windows Media format. Click the Listen Live button to connect to the page from which you choose your favored format. When they added Windows Media we found it less reliable than the RealOne feed.
To go to the stations website, click the Radio Radio icon.

Radio Radio is popular at match time. You should check in early to avoid the server being full and unable to provide further streams, although they expanded their site in November 2002 and have reduced the overload.