Bad tar archive?

[zarchucho]

[skrodahl]

RuneAudio_rpi_0.3-beta_20141029_2GB.img.gz is not a tar file. It's an img file that's compressed with gzip.

If you need to decompress the file, use one of the following commands:
* 'gunzip RuneAudio_rpi_0.3-beta_20141029_2GB.img.gz'
or
* 'gzip -d RuneAudio_rpi_0.3-beta_20141029_2GB.img.gz'

I suppose 'zcat RuneAudio_rpi_0.3-beta_20141029_2GB.img.gz > RuneAudio_rpi_0.3-beta_20141029_2GB.img' would do the trick as well.

If you're on Windows, you can use 7zip. Mac has gzip built-in.

[zarchucho]

Oh wow, I don't know how I didn't notice that. I feel like an idiot, thanks a lot.

[skrodahl]

You're not the first to make this mistake. I've done it myself numerous times.
Hope you get RuneAudio working. Not using RA would be a huge mistake.