Specifically, how fast is the connection to the site offering the audio/video content? If there is a download option, such as here on Cnet, try downloading the entire recording and then playing it to see if the issue is caused by an internet delay.
Let us know.
I have an HP m8517c Windows Vista Home Premium 64 bit machine. 5GB of memory,Intel Core 2 Quad CPU @ 2.40Ghz. This computer came with a 24" monitor with speakers built in. I used the supplied cord to connect to the proper sound connection on the CPU. Since I purchased the machine when I play a podcast in itunes, or listen to any kind of voice sent on the internet (usually opening in Windows Media Player, or Flash Player, or ?)the sound "crackles" and breaks up. At random. I do not know enough to say if all these are MP3 versions. I often listen to the CNET lessons and they breakup,m the Microsoft Office lessons breakup. I now installed seperate speakers, and it still happens. I have a new wire but am connecting through the same outlet on the CPU. I went through HP tech support since the computer is under warranty. The technician uninstalled and reinstalled the sound card driver. Then upgraded the sound card driver. Since a CD plays music without breaking up HP said it was my problem, not theirs. I have no idea where to go with this and hope someone can help me.