quality value gets truncated when using comma as decimal separator

I'm using dir2ogg 0.11.8 on Ubuntu Maverick. When using the "smart-mp3" option (-t), it computes a quality value accurate to two decimal places, but when calling oggenc, it replaces the dot with a comma: instead of

oggenc -q 4.51 ...

it does

oggenc -q 4,51 ...

and on my system, oggenc interprets that as -q 4 and reports "Encoding "...wav" to "...ogg" at quality 4.00".

The problem is on lines 441 and 451 of the dir2ogg script, which have:

.replace('.', ',')

The issue seems related to localization and whether the user's locale wants . or , for the decimal separator. Without doing any testing, I'm guessing that oggenc will always interpret "-q 4.51" correctly, so perhaps the replace() calls should be removed. (Or, be made locale-aware.)